Ingame messages- totally n00bish question

[Tifone]

Ok, dunno if there's a bug or it is just me unable to understand a basic thing

I'm currently in my first MP game. We've decided to use ingame message for all or at least the most of the communications, for the sake of roleplaying.

My problem is, when I write an ingame message and it goes longer than the initial size of the writing box or window, I dunno what is supposed to happen but the new words just don't appear, the box doesn't resize, neither I found a way to scroll the window down. The new words "are" there anyway, while hidden, because I have to cancel the same amount of letters I typed to return to the "visible" words.

I think I've tried everything, so I'm either missing something trivial or experiencing a strange bug.

Thanks in advance to whoever has the good will to help the poor guy here