https://bugs.kde.org/show_bug.cgi?id=515426
Bug ID: 515426
Summary: Windows have border visible on other screen when on
edge
Classification: Plasma
Product: kwin
Version First 6.5.91
Reported In:
Platform: KDE Linux
OS: Linux
Status: REPORTED
Severity: minor
Priority: NOR
Component: multi-screen
Assignee: [email protected]
Reporter: [email protected]
Target Milestone: ---
Created attachment 189164
--> https://bugs.kde.org/attachment.cgi?id=189164&action=edit
asd
SUMMARY
When moving a (non-maximized) window to the screen edge, the window border (and
shadow) are visible on the other screen as a thin line with a shadow right on
the edge of a screen.
STEPS TO REPRODUCE
1. Have two screens connected.
2. Move a window to the screen edge where the two screens meet. Using edge snap
zone (under Window Management -> Window Behavior -> Movement) helps here a lot.
3. Observe the thin line and a shadow appear on the second screen.
EXPECTED RESULT
The 1 pixel (if my primary display is at 150% scaling) border shouldn't be
visible on the second screen.
SOFTWARE/OS VERSIONS
Operating System: KDE Linux 2026-02-02
KDE Plasma Version: 6.6.80
KDE Frameworks Version: 6.23.0
Qt Version: 6.10.2
Kernel Version: 6.18.7-zen1-1-zen (64-bit)
Graphics Platform: Wayland
Processors: 4 × Intel® Pentium® CPU 4405U @ 2.10GHz
Memory: 8 GiB of RAM (7.2 GiB usable)
Graphics Processor: Intel® HD Graphics 510
- AND ALSO ON MY MAIN SYSTEM
Operating System: EndeavourOS
KDE Plasma Version: 6.5.5
KDE Frameworks Version: 6.22.0
Qt Version: 6.10.1
Kernel Version: 6.12.67-1-lts (64-bit)
Graphics Platform: Wayland
Processors: 32 × AMD Ryzen 9 7950X3D 16-Core Processor
Memory: 32 GiB of RAM (31.0 GiB usable)
Graphics Processor: AMD Radeon RX 7900 XTX
ADDITIONAL NOTES:
In attachments you can see the bug and my display arrangement (the bug appear
both with 100% and 150% scaling)
I'm unsure if this would be a "visual bug" or a feature/wishlist request. In
any case, I think the border and shadow should be hidden from other screens
until the window actually crosses onto other screens.
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