Bug 478078

Summary:	In some posts, images start to flicker when made too big
Product:	[Applications] Alligator	Reporter:	Tammes Burghard <kde>
Component:	General	Assignee:	Tobias Fella <fella>
Status:	CONFIRMED ---
Severity:	normal	CC:	justin
Priority:	NOR	Keywords:	qt6
Version:	24.01.80
Target Milestone:	---
Platform:	Arch Linux
OS:	Linux
Latest Commit:		Version Fixed In:
Attachments:	Video of the flickering image Another video of it

Description Tammes Burghard 2023-12-04 20:38:10 UTC

Created attachment 163864 [details]
Video of the flickering image

SUMMARY
***
In some posts, images flicker in front of the text when I resize the window to a too big size.
There are window sizes where the flickering stops after a few blinks within the flickering range.
***


STEPS TO REPRODUCE
1. Add this feed "https://events.ccc.de/feed"
2. Go to this post "Einladung zum Junghacker:innentag auf dem 37C3"
3. Play around with the size of the window

OBSERVED RESULT
The big red image starts to flicker at a certain window size. For some sizes, the flickering eventually stops, for others, it keeps flickering.

EXPECTED RESULT
The image is stable for all window sizes

SOFTWARE/OS VERSIONS
Operating System: Crystal Linux 
KDE Plasma Version: 5.90.0
KDE Frameworks Version: 5.246.0
Qt Version: 6.6.1
Kernel Version: 6.6.3-arch1-1 (64-bit)
Graphics Platform: Wayland

Comment 1 Tammes Burghard 2023-12-04 20:39:28 UTC

What, the flickering is not visible in the recording, there the image just disappears.
Wild

Comment 2 Tammes Burghard 2023-12-04 20:43:02 UTC

Created attachment 163865 [details]
Another video of it

Here, you can see a bit more flickering in the beginning, but let me tell you, it actually flickers more than visible here.

Comment 3 Justin Zobel 2024-05-03 02:32:46 UTC

Can confirm this on latest build from git master.