it is a known bug in smf2 has been there since smf2 was realsed it might get fixed one day huh well it's taken about 5 years for smf2x to come this far
Yeah what he said, unless I become a lot smarter in a short time and know more than the SMF developers then I don't see me fixing it.
Back in school before I left last year, towards the end on any SMF sites I'd get the problem and in College I get it. In both cases it's with Internet Explorer, I've never had the issue with FireFox and I never get it with Chrome when I use it, but don't use it that much so can't comment on that.
Just type out what you're gonna say in Notepad or something then paste it on the text box. That's what I do in college if I have to make a lengthy post.