Bug 467397

Summary: Thumbnails disappeared
Product: [Applications] kdenlive Reporter: Martin Schnitkemper <martin.schnitkemper>
Component: User Interface & MiscellaneousAssignee: Jean-Baptiste Mardelle <jb>
Status: REPORTED ---    
Severity: normal    
Priority: NOR    
Version First Reported In: 22.12.3   
Target Milestone: ---   
Platform: Arch Linux   
OS: Linux   
Latest Commit: Version Fixed/Implemented In:
Sentry Crash Report:

Description Martin Schnitkemper 2023-03-15 13:08:36 UTC 
SUMMARY
Since version 22.12.3 the thumbnails in the timeline have disappeared. I set the "In/Out Frames" option, but only a placeholder with no image appears.

STEPS TO REPRODUCE
1. Open a project
2. Set one of the frame preview options (I used "In/Out Frames")

OBSERVED RESULT
Placeholder instead of the thumbnail

EXPECTED RESULT
A thumbnail of the first/last frame in full zoom step (21/21)

SOFTWARE/OS VERSIONS
Operating System: Arch Linux 
KDE Plasma Version: 5.27.2
KDE Frameworks Version: 5.103.0
Qt Version: 5.15.8

ADDITIONAL INFORMATION
Furthermore, there is a process running in the background that permanently loads the system and continues to run after kdenlive is closed and has to be shut down manually.