Line height for chat messages exceed for members with symbols in nicknames

F.e. if a member has a very long nickname/display name, some of them are not shown correctly. In some cases they are even cut off.

If a member has special symbols in it (- , . ) or empty spaces, it even spreads over 2 or 3 lines.

It should be configurable:

• The column width for displaying nicknames
• The maximum line height for displaying nicknames

Or any other improvement to make it more compact, as it wastes a lot space.