1885276 - [KDE/X11] cursor visual misalignment when window is not maximized

Status: UNCONFIRMED

(Core :: Widget: Gtk, defect)

Description

[fabianmuehlberger]

Attachment: firefox_cursor_missalignment.png

User Agent: Mozilla/5.0 (X11; Linux x86_64; rv:123.0) Gecko/20100101 Firefox/123.0

Steps to reproduce:

Move the Firefox window to the side of the screen with [ALT + <]. (splits the monitor horizontally and moves the active window to one side)

The bug is always gone/reset when the window is maximized!

System:
Operating System: EndeavourOS
KDE Plasma Version: 6.0.1
KDE Frameworks Version: 6.0.0
Qt Version: 6.6.2
Kernel Version: 6.7.9-arch1-1 (64-bit)
Graphics Platform: X11
Processors: 4 × Intel® Core™ i5-6600K CPU @ 3.50GHz
Memory: 15,6 GiB of RAM
Graphics Processor: NVIDIA GeForce RTX 3060 Ti/PCIe/SSE2

Actual results:

The visual and actual cursor position is misaligned horizontally or vertically.

These Bugs happen not always but frequently.

• The cursor gets misaligned on the window that was moved.
• When a second split window is on the other side, the bug applies to that too
• most times the misalignment is a fixed horizontal distance as marked "x" in the image, (I don't know how to clip the pointer)
• sometimes there is also a vertical misalignment with roughly similar distance
• this is most noticeable on buttons, but applies to all elements (grabing the top bar to move the window, double clicking to maximize, hovering links, elements in the debug window)
• the visual cursor position is always down and right of the actual position

Expected results:

Visual and actual cursor should have the same position

Comment 1

[fabianmuehlberger]

This bug is accruing since the update to plasma 6

Comment 2

[fabianmuehlberger]

Other users reported to have the same bug:
https://forum.endeavouros.com/t/issue-with-firefox-cursor-offset-on-kde-plasma-6/52346/9

Comment 3

[BugBot [:suhaib / :marco/ :calixte]]

The Bugbug bot thinks this bug should belong to the 'Core::Widget: Gtk' component, and is moving the bug to that component. Please correct in case you think the bot is wrong.

Comment 4

[Martin Stránský [:stransky] (ni? me)]

So it's Plasma 6 regression, right?