I cannot reproduce this.
Collections look like they always did. Language is also observed.
Collection posters have, in my experience, always been restricted to just 1 proper collection poster (if collection was actually fetched automatically from TMDB), and a collage made from 4 posters.
Did this appear immediately after updating, or was there a server maintenance inbetweeen?
Incidentally, I’ve also noticed this: DBRepair development - #846 by ChuckPa
