User handle suggestions broken after 2.2 update

Environment

• Installation type: Source
• Pleroma version: 2.2.0-3334-g87fc069d-subcon (See: fristi/pleroma@87fc069d)
• Elixir version: 1.10.4
• Operating system: Devuan Beowulf 3.0
• PostgreSQL version: 12.4 (Debian 12.4-1.pgdg90+1)

Bug description

After the running the pleroma 2.2 update, I've noticed that the handle suggestions in pleroma-fe are empty when searching for particular users (though not for all users).

For instance, in the above screenshot, the user solidsanek didn't pop up as a suggestion until the entire handle has been typed in, despite this being a user I communicate with on a daily basis. Checking the requests reveals that the search query doesn't return any results until the full handle has been entered:

After "finding" these users once, the results will be cached client-side, but these are lost after a refresh.

Using the search function also yields no user results for the same query:

Update: eventually the search could find users more properly again, so this mostly fixes itself given enough time, but I still wonder why it happened in the first place.