[Bug] VNC: Mouse pointer doesn't change while hovering links or resizing frames

[B-Down]

Current Behavior

When the mouse pointer (arrow) is above a link, it stays as an arrow.
The links/buttons/whatever behave as usual (highlighting and such), it's only the pointer that is stubborn.

Resizing frames (such as sidebars) has the same issue: it stays as the basic arrow pointer.

The only occurences it changes over are text areas, where it behaves as expected.

Expected Behavior

Regular adaptive pointer.

Steps To Reproduce

1. Start the container
2. Connect to it via TigerVNC
3. Move the mouse around
4. ???
5. Sadness

Environment

• Firefox 125.0.3

Container creation

version: '3'
services:
  firefox:
    image: jlesage/firefox
    ports:
      - "5814:5800"
      - "5914:5900"
    environment:
      - DARK_MODE=1
      - DISPLAY_HEIGHT=1200
      - DISPLAY_WIDTH=1600
      - SECURE_CONNECTION_VNC_METHOD=TLS
    volumes:
      - "/docker/appdata/firefox-4-ssl:/config:rw"

Container log

[xvnc        ] Tue Jun 25 15:30:47 2024
[xvnc        ]  Connections: accepted: 192.168.xxx.xxx::2534
[xvnc        ]  SConnection: Client needs protocol version 3.8
[xvnc        ]  SConnection: Client requests security type VeNCrypt(19)
[xvnc        ]  SVeNCrypt:   Client requests security type X509Vnc (261)
[xvnc        ] Tue Jun 25 15:30:50 2024
[xvnc        ]  VNCSConnST:  Server default pixel format depth 24 (32bpp) little-endian rgb888
[xvnc        ] Tue Jun 25 15:32:05 2024
[xvnc        ]  Connections: accepted: /tmp/vnc.sock
[xvnc        ]  SConnection: Client needs protocol version 3.8
[xvnc        ]  SConnection: Client requests security type VeNCrypt(19)
[xvnc        ]  VNCSConnST:  closing /tmp/vnc.sock: Clean disconnection
[xvnc        ]  EncodeManager: Framebuffer updates: 0
[xvnc        ]  EncodeManager:   Total: 0 rects, 0 pixels
[xvnc        ]  EncodeManager:          0 B (1:-nan ratio)
[xvnc        ]  Connections: closed: /tmp/vnc.sock
[xvnc        ]  ComparingUpdateTracker: 400.035 Mpixels in / 33.8655 Mpixels out
[xvnc        ]  ComparingUpdateTracker: (1:11.8125 ratio)
[xvnc        ] Tue Jun 25 15:32:47 2024
[xvnc        ]  Connections: accepted: /tmp/vnc.sock
[xvnc        ]  SConnection: Client needs protocol version 3.8
[xvnc        ]  SConnection: Client requests security type VeNCrypt(19)
[xvnc        ]  VNCSConnST:  closing /tmp/vnc.sock: Clean disconnection
[xvnc        ]  EncodeManager: Framebuffer updates: 0
[xvnc        ]  EncodeManager:   Total: 0 rects, 0 pixels
[xvnc        ]  EncodeManager:          0 B (1:-nan ratio)
[xvnc        ]  Connections: closed: /tmp/vnc.sock
[xvnc        ]  ComparingUpdateTracker: 0 pixels in / 0 pixels out
[xvnc        ]  ComparingUpdateTracker: (1:-nan ratio)
[xvnc        ] Tue Jun 25 15:33:05 2024
[xvnc        ]  Connections: accepted: /tmp/vnc.sock
[xvnc        ]  SConnection: Client needs protocol version 3.8
[xvnc        ]  SConnection: Client requests security type VeNCrypt(19)
[xvnc        ]  VNCSConnST:  closing /tmp/vnc.sock: Clean disconnection
[xvnc        ]  EncodeManager: Framebuffer updates: 0
[xvnc        ]  EncodeManager:   Total: 0 rects, 0 pixels
[xvnc        ]  EncodeManager:          0 B (1:-nan ratio)
[xvnc        ]  Connections: closed: /tmp/vnc.sock
[xvnc        ]  ComparingUpdateTracker: 0 pixels in / 0 pixels out
[xvnc        ]  ComparingUpdateTracker: (1:-nan ratio)

Container inspect

[
    {
        "Id": "e80c3f1c9ede32d2a40bbca4ecbf3f30546627a68f56b465b7f64346507e8ab8",
        "Created": "2024-06-25T13:29:55.677326623Z",
        "Path": "/init",
        "Args": [],
        "State": {
            "Status": "running",
            "Running": true,
            "Paused": false,
            "Restarting": false,
            "OOMKilled": false,
            "Dead": false,
            "Pid": 378413,
            "ExitCode": 0,
            "Error": "",
            "StartedAt": "2024-06-25T13:29:56.150850126Z",
            "FinishedAt": "0001-01-01T00:00:00Z"
        },
        "Image": "sha256:c9e9594d22a5268ebbe56ad56bd9e93963bd737146c8b2972ad3264f65231ad3",
        "ResolvConfPath": "/var/lib/docker/containers/e80c3f1c9ede32d2a40bbca4ecbf3f30546627a68f56b465b7f64346507e8ab8/resolv.conf",
        "HostnamePath": "/var/lib/docker/containers/e80c3f1c9ede32d2a40bbca4ecbf3f30546627a68f56b465b7f64346507e8ab8/hostname",
        "HostsPath": "/var/lib/docker/containers/e80c3f1c9ede32d2a40bbca4ecbf3f30546627a68f56b465b7f64346507e8ab8/hosts",
        "LogPath": "/var/lib/docker/containers/e80c3f1c9ede32d2a40bbca4ecbf3f30546627a68f56b465b7f64346507e8ab8/e80c3f1c9ede32d2a40bbca4ecbf3f30546627a68f56b465b7f64346507e8ab8-json.log",
        "Name": "/Firefox-4-SSL",
        "RestartCount": 0,
        "Driver": "overlay2",
        "Platform": "linux",
        "MountLabel": "",
        "ProcessLabel": "",
        "AppArmorProfile": "",
        "ExecIDs": null,
        "HostConfig": {
            "Binds": [
                "/docker/appdata/firefox-4-ssl:/config"
            ],
            "ContainerIDFile": "",
            "LogConfig": {
                "Type": "json-file",
                "Config": {}
            },
            "NetworkMode": "firefox-4-ssl_default",
            "PortBindings": {
                "5800/tcp": [
                    {
                        "HostIp": "",
                        "HostPort": "5814"
                    }
                ],
                "5900/tcp": [
                    {
                        "HostIp": "",
                        "HostPort": "5914"
                    }
                ]
            },
            "RestartPolicy": {
                "Name": "no",
                "MaximumRetryCount": 0
            },
            "AutoRemove": false,
            "VolumeDriver": "",
            "VolumesFrom": null,
            "ConsoleSize": [
                0,
                0
            ],
            "CapAdd": [
                "AUDIT_WRITE",
                "CHOWN",
                "DAC_OVERRIDE",
                "FOWNER",
                "FSETID",
                "KILL",
                "MKNOD",
                "NET_BIND_SERVICE",
                "NET_RAW",
                "SETFCAP",
                "SETGID",
                "SETPCAP",
                "SETUID",
                "SYS_CHROOT"
            ],
            "CapDrop": [
                "AUDIT_CONTROL",
                "BLOCK_SUSPEND",
                "DAC_READ_SEARCH",
                "IPC_LOCK",
                "IPC_OWNER",
                "LEASE",
                "LINUX_IMMUTABLE",
                "MAC_ADMIN",
                "MAC_OVERRIDE",
                "NET_ADMIN",
                "NET_BROADCAST",
                "SYSLOG",
                "SYS_ADMIN",
                "SYS_BOOT",
                "SYS_MODULE",
                "SYS_NICE",
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                "SYS_PTRACE",
                "SYS_RAWIO",
                "SYS_RESOURCE",
                "SYS_TIME",
                "SYS_TTY_CONFIG",
                "WAKE_ALARM"
            ],
            "CgroupnsMode": "private",
            "Dns": [],
            "DnsOptions": [],
            "DnsSearch": [],
            "ExtraHosts": [],
            "GroupAdd": null,
            "IpcMode": "private",
            "Cgroup": "",
            "Links": null,
            "OomScoreAdj": 0,
            "PidMode": "",
            "Privileged": false,
            "PublishAllPorts": false,
            "ReadonlyRootfs": false,
            "SecurityOpt": null,
            "UTSMode": "",
            "UsernsMode": "",
            "ShmSize": 2147483648,
            "Runtime": "runc",
            "Isolation": "",
            "CpuShares": 0,
            "Memory": 0,
            "NanoCpus": 13000000000,
            "CgroupParent": "",
            "BlkioWeight": 0,
            "BlkioWeightDevice": null,
            "BlkioDeviceReadBps": null,
            "BlkioDeviceWriteBps": null,
            "BlkioDeviceReadIOps": null,
            "BlkioDeviceWriteIOps": null,
            "CpuPeriod": 0,
            "CpuQuota": 0,
            "CpuRealtimePeriod": 0,
            "CpuRealtimeRuntime": 0,
            "CpusetCpus": "",
            "CpusetMems": "",
            "Devices": [],
            "DeviceCgroupRules": null,
            "DeviceRequests": null,
            "MemoryReservation": 0,
            "MemorySwap": 0,
            "MemorySwappiness": null,
            "OomKillDisable": null,
            "PidsLimit": null,
            "Ulimits": null,
            "CpuCount": 0,
            "CpuPercent": 0,
            "IOMaximumIOps": 0,
            "IOMaximumBandwidth": 0,
            "MaskedPaths": [
                "/proc/asound",
                "/proc/acpi",
                "/proc/kcore",
                "/proc/keys",
                "/proc/latency_stats",
                "/proc/timer_list",
                "/proc/timer_stats",
                "/proc/sched_debug",
                "/proc/scsi",
                "/sys/firmware"
            ],
            "ReadonlyPaths": [
                "/proc/bus",
                "/proc/fs",
                "/proc/irq",
                "/proc/sys",
                "/proc/sysrq-trigger"
            ]
        },
        "GraphDriver": {
            "Data": {
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                "WorkDir": "/var/lib/docker/overlay2/e5e7653cae559e0d2ac5dc4fd9bf6396b4a52ce715b965c064c99d04ee7551ce/work"
            },
            "Name": "overlay2"
        },
        "Mounts": [
            {
                "Type": "bind",
                "Source": "/docker/appdata/firefox-4-ssl",
                "Destination": "/config",
                "Mode": "",
                "RW": true,
                "Propagation": "rprivate"
            }
        ],
        "Config": {
            "Hostname": "2e988c336416",
            "Domainname": "",
            "User": "",
            "AttachStdin": false,
            "AttachStdout": true,
            "AttachStderr": true,
            "ExposedPorts": {
                "5800/tcp": {},
                "5900/tcp": {}
            },
            "Tty": false,
            "OpenStdin": false,
            "StdinOnce": false,
            "Env": [
                "DISPLAY_HEIGHT=1136",
                "DISPLAY_WIDTH=1593",
                "SECURE_CONNECTION_VNC_METHOD=TLS",
                "TZ=xxx/xxx",
                "DARK_MODE=1",
                "PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/opt/base/sbin:/opt/base/bin",
                "ENV=/root/.docker_rc",
                "USER_ID=1000",
                "GROUP_ID=1000",
                "SUP_GROUP_IDS=",
                "UMASK=0022",
                "LANG=en_US.UTF-8",
                "KEEP_APP_RUNNING=0",
                "APP_NICENESS=0",
                "INSTALL_PACKAGES=",
                "PACKAGES_MIRROR=",
                "CONTAINER_DEBUG=0",
                "SECURE_CONNECTION=1",
                "SECURE_CONNECTION_CERTS_CHECK_INTERVAL=60",
                "WEB_LISTENING_PORT=5800",
                "VNC_LISTENING_PORT=5900",
                "VNC_PASSWORD=xxx",
                "ENABLE_CJK_FONT=0",
                "FF_OPEN_URL=",
                "FF_KIOSK=0"
            ],
            "Cmd": [
                "/init"
            ],
            "Image": "jlesage/firefox:latest",
            "Volumes": {
                "/config": {}
            },
            "WorkingDir": "/tmp",
            "Entrypoint": null,
            "OnBuild": null,
            "Labels": {
                "com.docker.compose.config-hash": "39debf32e6bcb5bdebd83fe858ac7dc56a4a8728e09ca510bcbe5fb5a7198716",
                "com.docker.compose.container-number": "1",
                "com.docker.compose.depends_on": "",
                "com.docker.compose.image": "sha256:2b023766ce6cfac720ea99d5d30de787cdc863719eb05e8b570816b29cb7432e",
                "com.docker.compose.oneoff": "False",
                "com.docker.compose.project": "firefox-4-ssl",
                "com.docker.compose.project.config_files": "/data/compose/4/docker-compose.yml",
                "com.docker.compose.project.working_dir": "/data/compose/4",
                "com.docker.compose.service": "firefox",
                "com.docker.compose.version": "2.20.2",
                "org.label-schema.description": "Docker container for Firefox",
                "org.label-schema.name": "firefox",
                "org.label-schema.schema-version": "1.0",
                "org.label-schema.vcs-url": "https://github.com/jlesage/docker-firefox",
                "org.label-schema.version": "24.04.1"
            }
        },
        "NetworkSettings": {
            "Bridge": "",
            "SandboxID": "b8a17066d3b421b878e25c9136e8972b8e0130ba810f8f347fafe84590d29496",
            "HairpinMode": false,
            "LinkLocalIPv6Address": "",
            "LinkLocalIPv6PrefixLen": 0,
            "Ports": {
                "5800/tcp": [
                    {
                        "HostIp": "0.0.0.0",
                        "HostPort": "5814"
                    },
                    {
                        "HostIp": "::",
                        "HostPort": "5814"
                    }
                ],
                "5900/tcp": [
                    {
                        "HostIp": "0.0.0.0",
                        "HostPort": "5914"
                    },
                    {
                        "HostIp": "::",
                        "HostPort": "5914"
                    }
                ]
            },
            "SandboxKey": "/var/run/docker/netns/b8a17066d3b4",
            "SecondaryIPAddresses": null,
            "SecondaryIPv6Addresses": null,
            "EndpointID": "",
            "Gateway": "",
            "GlobalIPv6Address": "",
            "GlobalIPv6PrefixLen": 0,
            "IPAddress": "",
            "IPPrefixLen": 0,
            "IPv6Gateway": "",
            "MacAddress": "",
            "Networks": {
                "firefox-4-ssl_default": {
                    "IPAMConfig": {},
                    "Links": null,
                    "Aliases": [
                        "firefox-4-ssl-firefox-1",
                        "firefox",
                        "2e988c336416",
                        "e80c3f1c9ede"
                    ],
                    "NetworkID": "a7e23f3623bccad61d193186bebab2a123e80aa58150ab6172e1dbb7526deeb6",
                    "EndpointID": "e11bffa642c5093d522dac724d82ab688c74e9c5edb7fac06b37c71e409b7d03",
                    "Gateway": "172.21.0.1",
                    "IPAddress": "172.21.0.2",
                    "IPPrefixLen": 16,
                    "IPv6Gateway": "",
                    "GlobalIPv6Address": "",
                    "GlobalIPv6PrefixLen": 0,
                    "MacAddress": "02:42:ac:15:00:02",
                    "DriverOpts": null
                }
            }
        }
    }
]

Anything else?

My good ol' FF container, which is based on FF 109.0.1, is behaving as expected.

[B-Down]

For the sake of thoroughness, I tried deploying with version: '3.9' instead of version: '3', and accessing it through a browser rather than VNC, but got the same result.

[jlesage]

What Docker image version was working as expected ?

[B-Down]

What Docker image version was working as expected ?

For the FF 109.0.1 I mentioned in my ticket, it's 23.03.1.

On that subject, in case that can be of relevance, for the latest FF version (FF 125.0.3), org.label-schema.version is 24.04.1, while DOCKER_IMAGE_VERSION is 24.05.1.
In the 109.0.1, both variables were set to the same value.

[jlesage]

The behaviour change has been introduced with Firefox 125 (docker image 24.05.1).

On that subject, in case that can be of relevance, for the latest FF version (FF 125.0.3), org.label-schema.version is 24.04.1, while DOCKER_IMAGE_VERSION is 24.05.1.

Looks good on my side:

$ docker inspect jlesage/firefox:v24.05.1 | grep org.label-schema.version
                "org.label-schema.version": "24.05.1"

[B-Down]

The behaviour change has been introduced with Firefox 125 (docker image 24.05.1).

Would you have a link pertaining to that "behavior" being ascertained ?
I can't help but notice that the term "behavio(u)r" is leaning strongly on the hazy side... to be more specific, from your comment I can't tell if it's a newly-introduced feature, or an actual bona fide bug (my preference goes to the latter ^^).

In any case, it's still present in 128.0.3.

[jlesage]

I don't know if it's a feature or a bug... I just noticed (by testing) that it's a change that comes from Firefox itself.

[B-Down]

I don't know if it's a feature or a bug... I just noticed (by testing) that it's a change that comes from Firefox itself.

@jlesage I (finally !) found out what this whole affair is/was about ...
It turns out that with FF123, Mozilla decided to use Gnome-specific cursors, instead of standard ones from early X11, that thus have been used for 40 years or so (which may also just be quite outdated anyway).

This is all still a bit unclear to me as who's "guilty" there, but you can possibly understand it better that I do:

• https://bugzilla.mozilla.org/show_bug.cgi?id=1881136
• https://bugzilla.mozilla.org/show_bug.cgi?id=1876366

I couldn't find a clean way to change cursors themes, so I did some ugly hack:

• Installed Capitaine Cursors: apk add --upgrade capitaine-cursors
• Copied the cursors directory from /usr/share/icons/capitaine-cursors-dark to /usr/share/icons/Adwaita
• Rebooted the container
• Enjoyed having my links properly pointed out again 🥳

There's hopefully a cleaner way to fix that, but that'd be out of my humble league...

Interestingly, your ESR container doesn't have that issue, even though it's supposed to be based on FF128, and it doesn't have a /usr/share/icons/Adwaita/cursors directory...

[B-Down]

Well, it turns out this issue would not go gentle into that good night...

I found out a few days after my previous message that the hand cursor would not show up anymore.
Copying the cursors directory to Adwaita and rebooting as done previously would not fix it.
Maybe it has something to do with some aggressive caching happening somewhere ? 🤷