mIRC is built on the IRC RFC, not specific software, which, to me is common sense, and unless a 'newer' version of the IRC protocol (which i doubt, since the existing one is more than sufficent), is released it shouldnt be added to mIRC.
Doing so would result in alot more work for Khaled, and then you'd have idiots adding random modes, just to be "different", which of course would need to be added to mIRC.
Saying that however, there must be something wrong your side, since, it appears perfectly here..
* Now talking in #eansdkons
* Coolkill sets mode: +j 1:1
Channel Modes: -> +j
Titlebar; mIRC - [#eansdkons [1][+j]]
Eamonn.
