- the OBS repositories also offer the release package (graphics:darktable) (which even has the fix for the base adjustment module already)
- it also offers the snapshot of the current stable branch (graphics:darktable:stable)
- last but not least … the master branch (graphics:darktable:master)
how you ended up with master branch is something for you to figure out. maybe you were eager to get your hands on 3.0 and then just stuck with it. But you added it to your machine. master is mostly stable but it is development and can be broken as well.
I think the explanation on
is pretty good. if not … I am sure the darktable team is open for suggestions on how to improve them.