$nickicon,$nickcolor variables are not replaced properly in message prefixes
In the https://dev.adiirc.com/projects/adiirc/wiki/Messages_Options docs and the Variables link in the Messages Option dialog, it says you can use $nickicon in the prefixes to show the nick's nicklist icon. When I try, it seems to parse $nick as normal and interpret "icon" as text.
The icon shows up normally using $pnick. Tried in latest and 3.5 stable, using different icons, adding $imagechar, etc.