@tiar : Since I define fill patterns as resources, I post here. If there is already a topic for it or it should be better listed in a separate topic please move it, if necessary after creating the new topic.
In Krita 5 (Windows 10) the search function for patterns is missing in the fill layer properties (accessible via the F3 key), in Krita 4 it was available. Given the size of my pattern collection, this is very “inconvenient”.
Probably it was just forgotten and is not a bug in the strict sense.
Krita 5 build from today
Krita 4.4.3
Michelist