Fullscreen window not accessible when it loses focus.

The issue:

I wanted to do X, but Y happened, and I expected Z. I think this is a bug.

Can’t refocus on a fullscreen window that lost focus. The fullscreen window doesn’t accept keyboard input so I can’t unfullscreen it.

qtile --version: 0.21.0 Logs attached at bottom. None of the open bugs seem to match my issue.

After some more testing it seems that buggy state(Y) happens whenever fullscreen window loses focus through:

• lazy.layout.next(). Buggy state does not happen when there is no window to switch to.
• Moving the mouse onto another window with focus on hover
• Switching to a different group WITH A WINDOW
• Switching to a blank group does NOT cause buggy state

When hidden, fullscreen windows cannot:

• Accept keyboard input, even when the Prompt widget shows the fullscreen window’s name
• Be switched to by Qtile via lazy.layout.next()
  • Switching away is possible, but layout.next() will skip the fullscreen window
  • rofi -show window can force Qtile to focus on fullscreen windows.
• Can sometimes get control of the window again with lazy.restart() (See Behavior when qtile is restarted).
• Application responds to lazy.window.kill()
• Application can be moved to another group.

Affected Applications:

• Osu-lazer (the bug report is based on behavior with this in fullscreen)
• Minecraft
• Interestingly, Firefox (f11) is NOT affected. Firefox with fullscreen YouTube isn’t either.

Behavior when qtile is restarted

On group with fullscreen window

Layout is :MonadTall Focus on Hover is On

• If Osu(fullscreen) is the only window
  • Osu and Qtile seems to have a fight, but Osu remains in fullscreen. Control is regained
• If Osu(fullscreen) is 1/2 windows
  • Osu will be forced into a window if focused.
    • Osu still thinks it’s in fullscreen.
    • Osu can accept keyboard input.
    • Focusing on another window will immediately hide Osu behind everything.
    • If the layout is bad you may end up with a 1/3 case
  • If not focused, it will be hidden immediately.
• If Osu(fullscreen) is 1/3 windows
  • I cannot get Osu to be focused. Osu is hidden(bugged) immediately after restart.

On a different group not containing fullscreen window

• Switching to the fullscreen group the first time after restart yields proper behavior
• Any future switches yields buggy behavior.

Debug Logs

Scenario 1

1. Delete qtile config from another group
2. lazy.restart() (mod-control-r)
3. $ qtile shell -> > debug()
4. Switch to group 6 (Osu-Lazer)
5. Expected behavior happens. Fullscreen is visible
6. Switch to Group 2
7. Switch to Group 6
8. Buggy behavior happens. Fullscreen is invisible
9. lazy.restart()

qtile (copy 2).log

Required:

• I have searched past issues to see if this bug has already been reported.

[elParaguayo]

did I write an essay?

No. You wrote a very thorough bug report which is great.

I have just had no time to look at this yet and may not have some time for a while longer.

[jwijenbergh]

You can use the TaskList widget http://docs.qtile.org/en/stable/manual/ref/widgets.html?highlight=tasklist#tasklist

You can also script it:

See e.g. this snippet by @m-col https://github.com/m-col/qtile-config/blob/1907ed323ebcb03f43d4925633e0b69560487042/tags.py#L52