Shift key doesn't work in Micro running in a terminal session with Tmux

[danqdinh]

Description of the problem or steps to reproduce

Steps

• Launch Tmux session to a folder, eg. tmux new -s foo -c /etc
• Open micro: micro
• Type some text in a line
• Move caret to middle of the line
• Press Shift+Left to select some text to the left
• Error: Text is not selected, instead, it shows [1;2D

The same thing to Shift+Right, it shows [1;2C.

But it seems advanced input all not working in Tmux,
mouse click becomes [<0;34;23m

Specifications

Latest micro, in WSL Bash

Commit hash: --
OS: Windows 11
Terminal: Windows Terminal Bash

[robinpecha]

The same problem here :(

[niten94]

I have not used tmux much before and I do not know much about terminals but there was this section in a page:
https://github.com/tmux/tmux/wiki/Modifier-Keys#tmux-is-recognizing-the-key

I was testing using xterm and tmux 3.1c but TERM was set as screen by default so keys pressed together with modifier keys were being written in micro. The keys were being handled and not written in micro when TERM was set to tmux-256color. I tried testing using tmux 3.3a too but TERM was set as tmux-256color by default.