https://bugs.kde.org/show_bug.cgi?id=417669
Bug ID: 417669
Summary: Wayland cursor position sent incorrectly to Xwayland
firefox/thunderbird
Product: Breeze
Version: 5.18.0
Platform: Other
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: gtk theme
Assignee: uhh...@gmail.com
Reporter: t...@r.je
Target Milestone: ---
Created attachment 126040
--> https://bugs.kde.org/attachment.cgi?id=126040&action=edit
screenshot of issue. Red dot is drawn at cursor position.
SUMMARY
This would be very easy to demonstrate with a screen recorder, unfortunately I
cannot find anything that can record the screen on kde wayland.
STEPS TO REPRODUCE
1. Open firefox or thunderbird in plasma wayland
2. Try to click on something
3. Both firefox and thunderbird think the mouse cursor is about -10px x -10px
out of position
Demo screnshot attached. I have created a test page here:
https://codepen.io/Tom__B/pen/VwLeNyJ so you can see what it supposed to
happen. It draws a red dot at the cursor position. As you can see in my
screenshot, Firefox thinks the cursor is in a different place than it is.
I had thought this affected all GTK apps but testing in GIMP, the pencil draws
at exactly the correct position.
Additional information:
I am running a 120 font DPI which scales the UI. Perhaps it's something to do
with this scaling which causes the miscalculation.
SOFTWARE/OS VERSIONS
Linux/KDE Plasma: 5.18.0
(available in About System)
KDE Plasma Version: 5.18.0
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