Bug 477826

Summary: Flickering dark box in translucent panel in front of workspace gap
Product: [Plasma] kwin Reporter: Tammes Burghard <kde>
Component: effects-variousAssignee: KWin default assignee <kwin-bugs-null>
Status: CONFIRMED ---    
Severity: minor CC: kde, nate, niccolo.venerandi, niccolo, xaver.hugl
Priority: NOR Keywords: qt6
Version First Reported In: 5.90.0   
Target Milestone: ---   
Platform: Arch Linux   
OS: Linux   
Latest Commit: Version Fixed/Implemented In:
Sentry Crash Report:
Attachments: Zoom on the panel while I switch workspaces
My panel settings

Description Tammes Burghard 2023-12-01 10:27:45 UTC
Created attachment 163692 [details]
Zoom on the panel while I switch workspaces

SUMMARY
***
When I switch between workspaces, a flickering dark box appears on the translucent panel in front of the black workspace gap.
***


STEPS TO REPRODUCE
1. Create multiple workspaces
2. Set panel translucent (I also have it floating, but don't think that is needed)
3. Switch workspaces

OBSERVED RESULT
Flickering dark box on the panel in front of the workspace gap

EXPECTED RESULT
Panel ignores the workspace gap

SOFTWARE/OS VERSIONS
Operating System: Crystal Linux 
KDE Plasma Version: 5.90.0
KDE Frameworks Version: 5.246.0
Qt Version: 6.6.1
Kernel Version: 6.6.3-arch1-1 (64-bit)
Graphics Platform: Wayland
Comment 1 Tammes Burghard 2023-12-01 10:28:17 UTC
The attachment also shows another bug. I focused on this one in the second half of the video
Comment 2 Nate Graham 2023-12-01 18:01:28 UTC
I'm afraid I'm having a hard time seeing the bug in that screen recording. Can you help me understand what it is by either beefing up the STEPS TO REPRODUCE (e.g. by specifying all your panel settings and whether any windows are open and if any of them are touching the panel on any workspaces) or else attaching a new screen recording that shows the whole screen instead of just a part of it? Thanks a lot!
Comment 3 Tammes Burghard 2023-12-01 20:17:18 UTC
Created attachment 163723 [details]
My panel settings
Comment 4 Tammes Burghard 2023-12-01 20:29:28 UTC
Of course I can.
I just added a screenshot of my panel settings and uploaded a whole screen recording to https://kuchenmampfer.de/kde_bug_477826.mp4.
On that, I pointed my mouse on the dark area to make it easier to find.
I didn't have a window open on any of my nine two-monitor workspaces (arranged as a 3x3 grid).
The panel is on the bottom edge of the upper monitor.
My global theme is Breeze Dark, colors are Material You Dark generated from my wallpaper, the rest of the relevant visual stuff is breeze.
I do the workspace switching via touchpad gesture and the mouse pointing via my external mouse.
And the plasmoids on my desktop are various configurations of the system monitor plasmoid and modernclock, which I ported to plasma 6 today.
But I guess that is not really relevant xD
Comment 5 Tammes Burghard 2023-12-01 20:31:00 UTC
The bug also happens when switching workspaces horizontally, but there it looks more like a flickering because the dark area is taller than the panel.
Comment 6 Nate Graham 2023-12-08 17:42:09 UTC
Aha, switching with a touchpad gesture. Unfortunately I cannot reproduce the issue myself when I replicate the multi-monitor multi-virtual-desktop setup depicted in your screen recording and switch virtual desktops with a touchpad gesture.
Comment 7 Niccolò Venerandi 2023-12-09 16:27:11 UTC
I can reproduce
Comment 8 Zamundaaa 2024-02-22 14:37:24 UTC
Can reproduce