Bug 465971

Summary:	Autoscroll icon in Firefox appears in the wrong location
Product:	[Plasma] kwin	Reporter:	Brandon Cooper <brandon.cooper>
Component:	wayland-generic	Assignee:	KWin default assignee <kwin-bugs-null>
Status:	RESOLVED UPSTREAM
Severity:	minor	CC:	nate, xaver.hugl
Priority:	NOR
Version:	5.27.0
Target Milestone:	---
Platform:	Arch Linux
OS:	Linux
Latest Commit:		Version Fixed In:
Sentry Crash Report:
Attachments:	Demonstration of the issue

Description Brandon Cooper 2023-02-17 23:57:20 UTC

Created attachment 156406 [details]
Demonstration of the issue

SUMMARY
***
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***


STEPS TO REPRODUCE
Launched Firefox with MOZ_ENABLE_WAYLAND=1 then attempted to use middle-mouse click after enabling general.autoScroll in about:config.


OBSERVED RESULT
Autoscroll works, however the icon for it appears about 300px below the cursor and is unable to go above a certain height on the main screen. On the secondary screen, the icon still appears at the same distance below the cursor, however it is not limited to (roughly) the bottom half of the screen.


EXPECTED RESULT
Autoscroll icon should appear directly under the cursor after using middle-mouse click.

SOFTWARE/OS VERSIONS
Windows: 
macOS: 
Linux/KDE Plasma: Arch, KDE Plasma 5.27
(available in About System)
KDE Plasma Version: 5.27
KDE Frameworks Version: 5.103.0
Qt Version: 5.15.8

ADDITIONAL INFORMATION
Was an issue prior to 5.27. I had hoped the new multi-monitor support would resolve the issue, but it unfortunately has not.

Comment 1 Brandon Cooper 2023-02-18 00:01:08 UTC

My second monitor is vertical, so it expands above and below my primary monitor. I found that if I move my primary monitor up or down in Display Configuration, the cut-off for autoscroll moves as well. In this way, if I set my primary monitor to be top-aligned with my secondary monitor, then autoscroll behaves properly.

This doesn't resolve the issue however, since in reality my primary monitor is not top aligned with my secondary monitor and it shouldn't have to be for the autoscroll icon to appear in the correct location.

Comment 2 Nate Graham 2023-02-22 02:23:21 UTC

Can reproduce.

Comment 3 Zamundaaa 2023-02-22 13:20:42 UTC

The autoscroll icon is painted by Firefox itself, so this is almost certainly a bug in Firefox. Please report this to Mozilla

Comment 4 Brandon Cooper 2023-02-22 15:50:07 UTC

It's been reported here for anyone who would like to follow it or add their report: https://bugzilla.mozilla.org/show_bug.cgi?id=1817387