https://bugs.kde.org/show_bug.cgi?id=489372
Bug ID: 489372
Summary: (Wayland) VirtualBox windows are moving to the bottom
when Plasma Panel changes its floating state, also
breaking Peek at Desktop and Edit Mode
Classification: Plasma
Product: kwin
Version: 6.1.1
Platform: Arch Linux
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: wayland-generic
Assignee: kwin-bugs-n...@kde.org
Reporter: kooltechnologytri...@gmail.com
Target Milestone: ---
SUMMARY
Oracle VM VirtualBox windows are moving to the bottom of the screen when Plasma
Panel changes its floating state. If panel is defloated, Peek at Desktop and
Edit Mode will be immediately cancelled after activating them.
STEPS TO REPRODUCE
1. Make sure you have a floating panel and it is always visible (Right-click on
the panel -> Show Panel Configuration -> Panel Settings -> Style -> Floating
enabled, Visibility -> Always visible).
2. Minimize all windows to make the panel actually floating.
3. Open Oracle VM VirtualBox. Its window will move to the bottom of the screen.
If not, move it higher, then reopen.
4. Open other window (e.g., Dolphin) and move it to the panel to make it
defloat, then move away. VirtualBox will move to the bottom again. If
VirtualBox is reached to the bottom and the panel isn't positioned at the
bottom, then VirtualBox will slide to the right, until it reaches to the bottom
right corner.
5. Make the panel defloat by moving window close to it or maximizing window.
6. Activate Peek at Desktop (Meta+D) or enter Edit Mode. It will immediately
cancel.
OBSERVED RESULT
VirtualBox windows are moving on their own. Peek at Desktop and Edit Mode
sometimes fail.
EXPECTED RESULT
VirtualBox windows shouldn't move on their own. Peek at Desktop and Edit Mode
should always work whenever I use them.
SOFTWARE/OS VERSIONS
Linux/KDE Plasma: Arch Linux
KDE Plasma Version: 6.1.1
KDE Frameworks Version: 6.3.0
Qt Version: 6.7.2
ADDITIONAL INFORMATION
This happens only on Wayland, any GPU and drivers. This bug was discovered
after upgrading to Plasma 6.1.0.
I tested this bug in VM on KDE Neon. In process, Plasma stuck in crash loop,
and couldn't exit it after reboot. I don't know if it's related to this bug, or
it's just buggy KDE Neon. Before I tested this many times on host machine, and
Plasma never crashed.
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