Created attachment 170501 [details]
Webp to open and try to re-export

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***

SUMMARY

When opening a webp file in Krita, and exporting it again as webp, Krita crashes immediately.

Terminal shows no error.

I wanted to follow https://community.kde.org/Guidelines_and_HOWTOs/Debugging/How_to_create_useful_crash_reports but it says "(K)Ubuntu has debuginfod starting with 22.10" and I still use 22.04. But you can try on your side, it will be fast to see if you can repro or not. Else you'll have to give me some way to debug on Ubuntu 22.04 (I also have some ArchLinux to test to compare if needed).

STEPS TO REPRODUCE
1. Open some webp in Krita, as a document. I attached one sample black rectangle if you want a quickstart
2a. File > Export... > new_file.webp > keep default settings (I use Save as animated WebP, Preset Default, Lossless encoding off, Quality 90%, Tradeoff 4, Dithering on, if that matters)
OR
2b. File > Save As... > new_file.webp

OBSERVED RESULT

Crash

EXPECTED RESULT

Save/export without crash

SOFTWARE/OS VERSIONS
Linux/KDE Plasma: Ubuntu 22.04 with Unity desktop
(available in About System)

ADDITIONAL INFORMATION