Bug: Android app doesn't allow to find a user for mentioning by "@" autocomplete typing

I have files, that shared with more than 250 people. And want to mention specific people in comment, to send them email notification. When I'm typing the "@userem" in Web App (inthe browser) - I see the user in autocomplete list (eg "useremail@example.com"). But when I try to do the same on Android app - some people are not available for mentioning! Even if I type the full email - the autocomplete list is empty! Seem there is a bug with total amount of users in autocomplete function, maybe it loads only first 100 users, and drop others? Here is the example: Autocompletion of "@da" on Web: https://i.imgur.com/ZRYQcqd.png - 9 users And autocompletion on the same file on Android app: https://i.imgur.com/ZKAZkza.png - only 1 user!! And even if I type the full email of the user - noting shown in autocomplete, and email notification didn't sent! Please fix this issue!