https://bugs.kde.org/show_bug.cgi?id=466688
Bug ID: 466688
Summary: [wayland] With a display in the top center, moving the
mouse cursor to the top of the screen on one of the
side monitors causes the mouse cursor to teleport onto
the top center screen
Classification: Plasma
Product: kwin
Version: 5.27.2
Platform: Other
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: core
Assignee: kwin-bugs-n...@kde.org
Reporter: indecisiveautoma...@gmail.com
Target Milestone: ---
SUMMARY
If you have a display layout with three screens on the bottom and one on the
top in the top-center, moving the mouse cursor to the top of one of the left or
right side displays causes the mouse cursor to teleport to the bottom of the
top-center panel. This only happens if the cursor is approximately more than
halfway across the screen in the direction of the top display.
This can be reproduced if you move the cursor to the corner of the display
opposite to the top-center display. If you're using a display to the left, move
the cursor to the top left of the display and move the cursor across the top of
the screen to the right. Once the cursor moves more than approximately halfway
across, it will teleport to being in the bottom left corner of the top-center
display. For a display to the right, the steps should be mirrored, moving the
cursor to the left.
This makes snapping windows maximised on these bottom displays a little bit
harder as trying to maximise them without corner-tiling them can be a bit
challenging. Without being careful, it can cause the window to corner-tile in
the top display.
This did not happen in the Plasma 5.27 beta or Plasma 5.27.0. It first started
happening (at least for me) in Plasma 5.27.1, and is still present in Plasma
5.27.2.
STEPS TO REPRODUCE
(Assumes a display layout as described)
1. On one of the bottom side displays (to the left or right of the bottom
center display), put cursor in top corner furthest from the top-center display
2. While keeping the cursor along the top of the display, move it in the
direction the top center display (if the cursor was in the top-left corner,
move it to the right while keeping it pressed against the top of the display)
3. Cursor will teleport to the corner of the top-center display.
OBSERVED RESULT
Cursor teleports to top-center display as described.
EXPECTED RESULT
Cursor should not teleport to the top-center display, and should behave as it
did in Plasma 5.27.0 and below.
SOFTWARE/OS VERSIONS
Linux/KDE Plasma: Kernel 6.2.1
KDE Plasma Version: 5.27.2
KDE Frameworks Version: 5.103.0
Qt Version: 5.15.8
ADDITIONAL INFORMATION
- Happens on scaled and non-scaled displays
- Have only tried the Wayland session, have not tried X11
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