/who command requires min. 6 characters of player name to match
 

A bit tough to explain in the thread title, but here's the explanation: Assume that the following two players are online:

Superman
Superwoman

Typing "/who all super" gives no results. Typing "/who superm" will return Superman.

It seems that matching by wildcard, so to speak, doesn't work unless you supply at least 6 characters. Precise matches for shorter names are returned, though (like "/who all Zliz").

It's the same for in-zone /who (without "all").

I have no idea if this is on purpose nor how it was in classic, but it would be a nice thing to have fixed, if possible.

Shinobi masters if you have less than 6 characters, they wont find you! Usually you could do /who "name" maybe the " helps or not, didnt test.