I built all SDK version back to v23.02.18 and see the same problem everytime.
Everything earlier than this commit-ID will not build against indilib-203 without errors:
commit 37e72a8c586a0e154b40f064e98c8b0231667e65
Author: Jasem Mutlaq <This email address is being protected from spambots. You need JavaScript enabled to view it.>
Date: Sat Feb 18 21:40:33 2023 +0300
QHY SDK v23.02.18
I first need to find the matching indilib commit to match the 3rd-party commit above to be able to build a reference where this problem above presumably does not appear. I only checked against my old astroberry repo with SDK 22.7.23 so far.
Until I can't proove that 22.7.23 build from source doesn't show this overscan problem I cannot exclude possible other reasons.
Its also hard to believe that noone else seems to have this problem reported for over a year.
So I guess theres someting else going on.
But clear sky tonight after a long time, so its imaging time now