No results at assigning Assigne/Reviewer if below 3 characters

Merge requests can be assigned to other users at "Assignee" or "Reviewer" by clicking the "Edit"-link, see https://docs.gitlab.com/ee/user/project/merge_requests/getting_started.html#approval-rule-information-for-reviewers

However, if you type below 3 characters in the search-field it says "No matching results" even if there are any. Only after the 3rd character the search-result appears.

The error-message must be "Please enter at least 3 characters" in this case. But I would vote to start the search when entering 2 letters already - for smaller teams 2 characters are more than enough.