I personally feel that the mode section in the titlebar should display the mode *ARGUMENTS*. These can be retrieved with /mode #channel, so theres no reason why it's not possible. For example my titlebar says the following for a channel im using as an example:
mIRC - [#ut (ForTheGamers, tyler) [19] [+CjnTt]: Rules @ http://www.forthegamers.org/forums/index.php?showtopic=3' <<>> Ross_Co's bday 6 days from this date :]
So the format is currently by default...:
mIRC - [#CHANNEL (NETWORK, NICKNAME) [USERS_IN_CHANNEL] [THE_SECTION_WITH_THE_MODES_I_FEEL_SHOULD_HAVE_ARGS]: TOPIC_HERE]
The modes (including the args) in that channel are:
+CjnTt 8:7
So, concluding, i believe the title bar should say (in this case):
+CjnTt 8:7 instead of +CjnTt