tiling changes with minimized window and workspace switch

[n3m0-22]

While testing https://github.com/pop-os/shell/pull/1610 on Pop!_OS 22.04 I found an issue where windows are not keeping their tiling position.

This does not seem to be connected to https://github.com/pop-os/shell/pull/1610 as this happens with or without the PR installed.

There was a similar report on Mattermost that suggested it was related to Desktop Icons NG, but this happens with the extension enabled or disabled.

Screencast from 04-12-2023 10:33:03 AM.webm

Steps to reproduce:

• start with no windows open and tiling enabled
• open two Firefox windows side by side in the first workspace
• move to the second workspace
• open Files/Nautilus then minimize the window
• move back to the first workspace
• open a GNOME Terminal window (it does not matter if it tiles on the left or right side)
• move back to the second workspace and un-minimize Files/Nautilus

This results in Files/Nautilus being tiled to a 1/4 of the screen on the second workspace. On the first workspace the side with the terminal open will now have the terminal and one of the Firefox windows tilted to 1/8 of the workspace.

• move back to the second workspace and close Files/Nautilus
• move back to the first workspace

Now the windows that were taking 1/8 of the workspace will take 1/4, but not in the usual way. They will instead be side by side on 1/2 of the workspace.

Closing the terminal will result in one of the Firefox windows not filling in the empty space.

Enabling and disabling tiling will reset everything.

Notes:

• I have been able to reproduce this on lemp11, gaze15, and Dev One.

• The programs used don't seem to matter. Firefox, Files/Nautilus, and GNOME Terminal are only examples.

• Running journalctl -o cat -n 0 -f "$(which gnome-shell)" | grep -v warning while reproducing this issue has shown nothing of note.

Update: This is happening on Pop!_OS 20.04 as well.

[caschbre]

I experience a similar issue. I have three windows stacked on one monitor. I minimize the middle window and then open it back up. When I do the two bottom windows are now side-by-side instead of stacked.

I'm using Pop!_OS 22.04 LTS x86_64.

[caschbre]

Looks like this is similar or the same as #307