SUMMARY see $SUBJECT

STEPS TO REPRODUCE
1. Open keyboard shortcuts editor
2. Modify shortcuts, e.g. "Space bar = Preview" and "Next image = PgDown" (instead of Spacebar)
3. Save, and test
4. Quit, restart Digikam, then test again

OBSERVED RESULT
After step 3, the modified shortcuts work.
After step 4, they don't work any more. So they are not saved to disk in a persistent way.

EXPECTED RESULT
Modified shortcuts should persist across Digikam sessions, reboots, etc.

SOFTWARE/OS VERSIONS:
KDE Neon with KDE Plasma 22.04 with all updates applied
Digikam current Appimage 8.1.0