Again and again I had problems with posting pictures that I had taken with my smartphone camera. The same applies to bluesky.
@dalto pointed out to me that I should enable html5 canvas for bluesky and the forum.
I use firefox with arkenfox user.js and the browser privacy settings are strict.
I then proceeded as follows:
-
about:config
-
privacy.resistFingerprinting
-
privacy.resistFingerprinting.exemptedDomains: forum.endeavouros and bluesky added
-
Restart and everything works as desired.
If anyone has a better solution for me now, let me know