I use mIRC 6.17 and the nickname color system.
When a nickname has several modes (@+), when I want to whois him by right clic, the mouse don't change by a hand but stay to an arrow.
Example :
(16:45:48) <4@+servalxl|iCi_eT_La> 5??[/code/code]
Here the mouse don't change
[code](16:43:49) <4@Alchimiste> 00?
Here the mouse change