https://bugs.kde.org/show_bug.cgi?id=489623
Bug ID: 489623
Summary: Maximizing window while panel is floating causes
screen glitches
Classification: Plasma
Product: kwin
Version: 6.1.1
Platform: Fedora RPMs
OS: Linux
Status: REPORTED
Severity: major
Priority: NOR
Component: compositing
Assignee: kwin-bugs-n...@kde.org
Reporter: kde.rr...@passmail.net
Target Milestone: ---
SUMMARY
Maximizing the window while the panel is floating causes weird glitches all
over the screen.
It looks like the maximized window doesn't render because of the floating
panel, but Plasma thinks it's rendering, which doesn't clear the buffer and
results in such weird artifacts from other windows. This issue appears for
every maximized window (X11 and XWayland), and interestingly, a full-screen
window works fine. Snapping the window to the side (half-width / full-height)
also works.
This is annoying because it also affects games that run as a borderless window.
[Look for screen recording in ADDITIONAL INFORMATION]
STEPS TO REPRODUCE
1. Create bottom panel with "Floating=enabled" and "Visibility=always visible"
2. Arrange the windows so that they do not cover the panel and panel is
floating
3. Maximize window
OBSERVED RESULT
Whole screen is messed up
EXPECTED RESULT
Window is properly maximized
SOFTWARE/OS VERSIONS
Operating System: Fedora Linux 40
KDE Plasma Version: 6.1.1
KDE Frameworks Version: 6.3.0
Qt Version: 6.7.1
Kernel Version: 6.9.6-200.fc40.x86_64 (64-bit)
Graphics Platform: Wayland
Processors: 16 × AMD Ryzen 7 5800X 8-Core Processor
Memory: 31.3 GiB of RAM
Graphics Processor: AMD Radeon RX 6900 XT
Manufacturer: Micro-Star International Co., Ltd.
Product Name: MS-7C37
System Version: 2.0
ADDITIONAL INFORMATION
It is difficult to describe this error in more detail, so I am providing a link
to the screen recording.
https://drive.proton.me/urls/7XD720JMKC#hY30VQoeH3An
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