Bug 507789

Summary:	brave browser doesn't work properly when using it simultaneously in two plasma workspaces
Product:	[Plasma] kwin	Reporter:	Daniel Yuri <gratzyuri>
Component:	general	Assignee:	KWin default assignee <kwin-bugs-null>
Status:	RESOLVED DOWNSTREAM
Severity:	normal	CC:	gratzyuri, kdedev, nate
Priority:	NOR
Version First Reported In:	6.4.3
Target Milestone:	---
Platform:	Arch Linux
OS:	Linux
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:
Attachments:	requested logs

Description Daniel Yuri 2025-08-02 18:55:45 UTC

SUMMARY


STEPS TO REPRODUCE
1.  Have brave brower open in two workspaces
2.  Have youtube opened in brave in first workspace
3.  Go to second workspace and browse web using brave

OBSERVED RESULT
Brave browser in the second workspace keeps locking up, becoming unresponsive every few seconds. You'll notice it trying to scroll down any page or highlight any test to copy and paste

EXPECTED RESULT

Brave should work no different in the second workspace just because you have brave also opened in first workspace. 

SOFTWARE/OS VERSIONS
Arch Linux
KDE Plasma Version: 6.4.3
KDE Frameworks Version: 6.16.0
Qt Version: 6.9.1

ADDITIONAL INFORMATION
Not sure if this is a bug with KDE workspaces or an issue with brave browser. I've heard from reddit it also happens with chromium tho... I've never submitted a bug report before, sorry if I didn't do it correctly or in right location.

Comment 1 TraceyC 2025-08-07 17:40:46 UTC

Can you run this, reproduce the bug, and then press Ctrl+C to end it? That will save a log file, which you can attach to this report. This may have information that helps us get more information about what's happening:

sudo journalctl -f > ~/logs.txt

Thanks!

Comment 2 Bug Janitor Service 2025-08-22 03:47:17 UTC

🐛🧹 ⚠️ This bug has been in NEEDSINFO status with no change for at least 15 days. Please provide the requested information, then set the bug status to REPORTED. If there is no change for at least 30 days, it will be automatically closed as RESOLVED WORKSFORME.

For more information about our bug triaging procedures, please read https://community.kde.org/Guidelines_and_HOWTOs/Bug_triaging.

Thank you for helping us make KDE software even better for everyone!

Comment 3 Daniel Yuri 2025-08-22 14:04:09 UTC

Created attachment 184354 [details]
requested logs

hi sorry for delay, I just reproduced what I described in the report: I opened brave in a second workspace while brave was open already in the first workspace. In the second workspace I then visited reddit and had stuttering while trying to scroll and interact with reddit. It's as if brave thinks the instance in the first workspace should be the focus and doesn't work properly when used at the same time in a second workspace.

Comment 4 Nate Graham 2025-08-26 21:13:02 UTC

If the app can't handle multiple instances with each instance open in a different virtual desktop, it's an app issue, not a Plasma issue. Please report it to the Brave folks. Thanks!