Can't tag users in comments

I can’t tag some users in comments. When I type @, only a few users are listed, not all. This seem to affect selected users (other users are able to tag the users that are not shown for me).

Can it be a user-level permission issue? I used to be able to tag those users without problem in the past.

This happens on the web, as well as on Figma Desktop App version 116.0.4 (MacOS 12.4).