I have been having issues with my latest images (since about 2 weeks ago), where I see artifacts (the kind I believe you would get without dithering) on the stacked results. I first thought that was a mistake on my end, so I reprocessed some older data, and the same issue occurs. I believe this all started when Siril switched to 32 bits (I’m on Linux Mint 19.3 and installed Siril from the PPA), although it might not be related to this specific change.
The first image below is what I get in the latest version. The second image is what I obtained 2 months ago with the then-latest version. They are both stacked in the exact same way, except for the reference image for registration.
On an unrelated note, I shoot from KStars/Ekos, and when I open my picutres in Siril, they are mirrored vertically, is this normal behavior?