reference to a user isn't highlightet like the reference to a time

It is posible to click on the time of a chat-post to reference this line.
both lines will then be highlightet when hovering over the time in the new chat line!
that works fine.

but when i click on the user-name it is insertet like this:
username: ragesoft
inserte in inputbox:
ragesoft<

if i try to highlight the reference user nothing happens! it should work like the time-reference, so that each line of the user is highlighted when hoovering, should it?!

thx :D