https://bugs.kde.org/show_bug.cgi?id=452438
Bug ID: 452438
Summary: black line below the titlebar in scaling different
from 100% depending on window position on screen
Product: kwin
Version: master
Platform: openSUSE RPMs
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: wayland-generic
Assignee: kwin-bugs-n...@kde.org
Reporter: ryu.ketsu...@outlook.com
Target Milestone: ---
Created attachment 148073
--> https://bugs.kde.org/attachment.cgi?id=148073&action=edit
A demonstration of what is happening
SUMMARY
This is something that happens on the Wayland session with some windows, like
LibreOffice and Wine applications. It also only happens if the scaling is not
100%. In my case, it's 75% because of the low display resolution. Moving the
window on screen will change if the black line will appear or not, as well as
the thickness of the line, so it would appear that there is something with the
scaling that doesn't fully align the content of the window inside the window
itself.
STEPS TO REPRODUCE
1. Set Wayland scaling to 75%
2. Open any non KDE window, even other Qt windows
3. Move them around vertically
OBSERVED RESULT
A black line appears under the titlebar, with even the thickness varying
depending on the position
EXPECTED RESULT
No such black line to appear
SOFTWARE/OS VERSIONS
Operating System: openSUSE Tumbleweed 20220406
KDE Plasma Version: 5.24.80
KDE Frameworks Version: 5.93.0
Qt Version: 5.15.2
Kernel Version: 5.17.1-1-default (64-bit)
Graphics Platform: Wayland
Processors: 4 × Intel® Core™ i3-7020U CPU @ 2.30GHz
Memory: 11.5 GiB of RAM
Graphics Processor: Mesa Intel® HD Graphics 620
Manufacturer: LENOVO
Product Name: 81FE
System Version: Lenovo ideapad 330-15IKB
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