Created attachment 153414 [details]
screenshot of issue when opening png

SUMMARY
***
NOTE: If you are reporting a crash, please try to attach a backtrace with debug symbols.
See https://community.kde.org/Guidelines_and_HOWTOs/Debugging/How_to_create_useful_crash_reports
***


STEPS TO REPRODUCE
1. Right click on any png picture on macOS 12.0 Ventura
2. Select Open With --> Other...
3. Switch Enable menu list from Recommended Applications to All Applications and select kolourpaint
4. A warning will display below saying "It's not know if this application can open somefile" (extension is omitted).

OBSERVED RESULT
macOS does not recognize kolourpaint as image manipulation tool

EXPECTED RESULT
Maybe recognize it

SOFTWARE/OS VERSIONS
Windows: 
macOS: 13.0
Linux/KDE Plasma: 
(available in About System)
KDE Plasma Version: 
KDE Frameworks Version: 
Qt Version: 

ADDITIONAL INFORMATION
App is
kolourpaint-22.08.2-1688-macos-64-clang.dmg
downloaded from
https://binary-factory.kde.org/view/MacOS/job/Kolourpaint_Nightly_macos/