Bug 485369

Summary: empty layer thumbnails on versions of krita since 5.2.prealpha
Product: [Applications] krita Reporter: fae <pinkskyatnight>
Component: DockersAssignee: Krita Bugs <krita-bugs-null>
Status: RESOLVED FIXED    
Severity: normal    
Priority: NOR    
Version First Reported In: unspecified   
Target Milestone: ---   
Platform: Other   
OS: Linux   
Latest Commit: Version Fixed/Implemented In:
Sentry Crash Report:

Description fae 2024-04-11 12:22:36 UTC 
SUMMARY

Had been going to do a bug report about layer thumbnails empty [shows a single black pixel square with white outline] in most recent 5.3 appimage ran (krita-5.3.0-prealpha-de10297103-x86_64.appimage) ... tried to run a later 5.3, to note what to include in bug report, but unfortunately segfaults (have done bug report ... https://bugs.kde.org/show_bug.cgi?id=485252). 

On trying versions had missed while taking a break, e.g. 5.2.0/5.2.1 betas and finals, and 5.2.2, found same issue of layer thumbnails empty. 

Using krita-5.2.0-prealpha-e41db7b620-x86_64.appimage from before, and it works fine, including layer thumbnails. 
Have done various searches, including on krita forum, but can't seem to see anyone with same issue, or any bug reports on it. Not sure what changed from 5.2.0-prealpha onwards, but can't run anything since.  

STEPS TO REPRODUCE
1. open variety of appimages
2. no layer contents show ... single dark pixel in centre of each layer thumbnail

OBSERVED RESULT
empty layer thumbnails

EXPECTED RESULT
contents of canvas show in layer thumbnails

SOFTWARE/OS VERSIONS
MX Linux 21 xfce, running Mate 1.24.1, kernel 5.10, x11, mesa 20.3.5
amd ryzen7, radeon rx5700xt, 32 ram
Qt Version: 5
Comment 1 Halla Rempt 2024-04-11 12:59:29 UTC 
*** Bug 485370 has been marked as a duplicate of this bug. ***
Comment 2 fae 2024-04-11 13:01:55 UTC 
Sorry about accidental duplicate ... system said to try to upload image again and 2nd report happened. And just thought to try vanilla, without my backup stuff copied over, and layer thumbnails showing fine in 5.2.2. Will close, and test plugins individually to see if trigger issue. Thanks for your time, and apologies for not thinking to test vanilla before doing bug report.
Comment 3 fae 2024-04-11 13:46:49 UTC 
Just to add that issue was having layers docker activated in KanvasBuddy.