1884567 - [KDE/X11] Snapping firefox window in KDE Plasma will sometimes offset cursor

Status: UNCONFIRMED

(Core :: Widget: Gtk, defect, P3)

Description

[daf]

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

Steps to reproduce:

When snapping a firefox in KDE Plasma will sometimes offset the mouse cursor.

Related KDE bug report: https://bugs.kde.org/show_bug.cgi?id=482587

Actual results:

https://youtu.be/j3qv4bqQgSo

Expected results:

Cursor should not be offset

Comment 1

[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 2

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

I guess you're using fractional screen scale, right? Also please attach your about:support page.
Thanks.

Comment 3

[daf]

Attachment: about:support

Comment 4

[daf]

(In reply to Martin Stránský [:stransky] (ni? me) from comment #2)

I guess you're using fractional screen scale, right? Also please attach your about:support page.
Thanks.

I use 200% (2.0) scaling.

Comment 5

[daf]

I've noticed that this issue also happens when firefox restore windows after a restart. The restore window will have an offset cursor, can be worked around by maximizing the window.

Comment 6

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

Is that a recent regression? Did it worked before?
Thanks.

Comment 7

[daf]

(In reply to Martin Stránský [:stransky] (ni? me) from comment #6)

Is that a recent regression? Did it worked before?
Thanks.

I've only noticed this issue after upgrading to plasma 6.0.1.

Using my normal profile with the mozregression tool i can reproduce from v120 to 123 (browser windows restore with the offset mouse).

Comment 8

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

Could be a Plasma 6 regression then?