On the movie or TV series info/pre-play screens the manner in which Collections are displayed in the related content area needs to be tweaked. Right now if an item is in multiple collections it only shows a row for only one collection. I don’t think there should be a row for each collection, but if an item is in multiple collections Plex should instead have one row called Collections and show the poster art of the collections.
In other words, if an item is in 1 collection there should be a row with all the items in that collection. If an item is in >1 collection there would be one row showing the poster art for each of the collections that movie or tv show is contained in.
This area of the app needs a bunch of tweaking (like rows maxing out at 10 items and no ‘More…’ button), tackling the collection issue would be a nice place to start that tweaking.