First of all, I believe that it is not a bug in RawTherapee, but I am asking here for advice because I am completely confused.
What I did:
Compile the development version of RT back in April. Everything works fine.
At some point, upgrade my system without recompiling RT. Everything works fine.
git pull and recompile. I get this:
git checkout to the commit I was using before, or even an older one. Recompile. Same result as 3!
The Arch Linux package works fine, but I need to use the dev version to use my X-T30 properly.
The problem is less pronounced with old files using a Bayer matrix, but still clearly present.
Does anyone have an idea of where the problem could come from? Maybe a library?