Bug 509726

Summary:	Firefox wayland pop-up player doesn't stay above all the windows?
Product:	[Plasma] kwin	Reporter:	pollux/ned <pollux66>
Component:	compositing	Assignee:	KWin default assignee <kwin-bugs-null>
Status:	RESOLVED NOT A BUG
Severity:	normal	CC:	kde
Priority:	NOR
Version First Reported In:	6.4.90
Target Milestone:	---
Platform:	Other
OS:	Linux
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:

Description pollux/ned 2025-09-20 19:22:30 UTC

SUMMARY
Since the protocol is available in plasma 6.5 now and in firefox (i used nightly version just in case) i tried doing a youtube video in firefox, enable pip, opened a fullscreen game in xwayland and wine wayland just in case, pip window couldnt stay above the game, is this on purpose or is something missing?

STEPS TO REPRODUCE
1. use plasma 6.5 beta
2. play a youtube video in firefox
3. launch a video game like dirt rally 2.0 is what i used

OBSERVED RESULT
the pip window does not stay above any of the windows or fullscreen game

EXPECTED RESULT
it should stay above on every window

SOFTWARE/OS VERSIONS
Linux/KDE Plasma: Cachyos
KDE Plasma Version: 6.4.90/Plasma 6.5 beta
KDE Frameworks Version: 6.18.0
Qt Version: 6.10.0

ADDITIONAL INFORMATION

Comment 1 David Redondo 2025-09-22 09:07:43 UTC

pip support is not enabled by default in kwin since it's a in development protocol

Comment 2 pollux/ned 2025-09-22 12:15:16 UTC

(In reply to David Redondo from comment #1)
> pip support is not enabled by default in kwin since it's a in development
> protocol

oh i see, how would i enable it so i can test it out?

Comment 3 David Redondo 2025-09-22 12:31:49 UTC

env var KWIN_WAYLAND_SUPPORT_XX_PIP_V1=1