[Suggestion] Add a feature: Search the members by username

Hi there,
I recently found another issue that needs improvement:
The search bar can only search the names, which in the current situation few users will really fill in. I tried to search by username but it doesn’t seem to work.

I suggest that the searchbox supports mixed searching for username+nickname instead of the first+last name, which is seldomly used nowadays.

Also the similar issue happens in the searchbox in ‘friends’ and ‘conversation’, also in the user display name setting. I already addressed this issue before. Hope it can be improved in the future ??