When entering the @ charachter Jira automatically starts to filter for other users which is a cool feature. The feature could be improved by ignoring those special characters when typing and filtering (as it is for example not so cool to type those on a english keyboard). For example:

We have a user with the name 'Fréderick'. When I do enter know 'Fre' Jira does not propose me 'Fréderick' as it appears that the characters must match exactly. It would be nice that Fréderick gets proposed even though I am just entering a normal e instead of the é.