BUG: Blank image in Linux Chromium

[pllim]

https://get.webgl.org shows a spinning cube on the browser, but I don't see anything when I run the demo notebook from @astrofrog from #429 on RHEL 7 Chromium browser. No error message.

Red Hat Enterprise Linux Server release 7.9 (Maipo)
Google Chrome Version 88.0.4324.150 (Official Build) (64-bit)

cc @maartenbreddels

[astrofrog]

Just to check, did you add the data to the viewer? (A manual interactive step) - I think this should be add automatic but isn't at the moment

[pllim]

I also saw the same bug using jdaviz --layout=imviz ..., which should have added it automatically? Anyways, I have to remember to check your notebook without #541 and make sure it is not a bug I introduced.

[astrofrog]

I don't think the CLI version currently adds the data automatically but I'll check

[pllim]

OMG, you are right... I need to click on the hammer icon and then check a checkbox. Both in the notebook and "standalone" version. I had to re-watch your demo video to see what you meant. Not intuitive but also not a bug.