X11: Toggling 'Window grouping' makes all task buttons disappear

[isf63]

Expected Behavior

Current Behavior

Toggling 'Window grouping' on X11 makes all task buttons disappear

Possible Solution

Steps to Reproduce (for bugs)

1. Open an X11 LXQt session
2. Have a panel with a taskbar
3. Toggle 'Window grouping' (enabling or disabling, doesn't matter)
4. All task buttons disappear

Restarting the X11 session fixes it

Context

X11

Wayland isn't affected

System Information

• LXQt Version: git
• Qt Version: 6.7.3
• liblxqt Version: git

[stefonarch]

Confirming. I tested my old packages up to the first wayland-taskbar - all the same issue. so the cause is probably in Qt changes. I'm quite sure it worked there.

EDIT: maybe not, as in debian VM with an older Qt version it's the same.

[stefonarch]

The other option (don't remember in english) which puts nearby windows of the same class triggers the same issue, both on checking/unchecking. X11 only too.

[tsujan]

@isf63, thanks a lot for finding and reporting this important regression!

I think the problem is in LXQtWMBackendX11::reloadWindows(); will check it.

I also found out that we have two redundant files in our git source!

[tsujan]

Please try https://github.com/lxqt/lxqt-panel/pull/2131

[isf63]

Grouping on/off and "put together windows of the same class" on/off no longer triggers disappearing.

On a side note, I'm getting much larger binaries than my main install. I was curious if the size went down by removing those two redundant files.

[ ~/Programming/lxqt/lxqt-panel/build/panel] du -h lxqt-panel /usr/bin/lxqt-panel
1.8M    lxqt-panel
1.3M    /usr/bin/lxqt-panel

[tsujan]

On a side note, I'm getting much larger binaries than my main install

On the contrary, the binary is a little smaller because of that removal — about 40 KiB for me. Its size is 1.4 MiB here.

[isf63]

It's probably due to different compiler flags between make and makepkg/AUR.