Hi mykp
Yes this is really annoying for those who are affected.
As I expect you know, this problem has occurred in the past but the most recent manifestation was linked to the August 5th update of Android (3.A.0129.20210805) and widely discussed in this thread.
Note: Interesting that the original post of this thread, written in October last year, mentions two problems very close to the two that occurred again with the 20210805 update. To me, the “timeout” problem described by corylus_avellana might well be confused with the adaptive brightness problem – indeed I thought it was just another thread about the August update until I saw the date of the original post and realised that the thread had just been brought back to the top by mykp’s contribution.