Actually, they never changed their message either. (The site is German)
What you do is make a HUGE post (after activating QR, it doesn't work on forums where it's auto-activated) that goes over the max character limit, but put a funny message at the start with a bunch of line breaks, like I did. Then, just submit the post. When the message comes up saying your post is too long, hit the back button, and most of the time (not always for some reason) what you typed is in the QR box -- even though the box is disabled.