I don’t know if its just me, but on the forums I personally keep hitting the “+ Reply to Thread” whenever I write a comment in a quickreply box, because my brain thinks this will post the message I just wrote, and I lose my comment. Would it be possible to move this button a bit, maybe to the right or something? Or is it not a problem for anyone else?
Honestly I’ve never clicked it. I don’t even know why it’s there. As you said, the reply-box is already open and the button does nothing else than deleting what you’ve already written. Or is there any other functionality?
I’ve just found out that you can open the advanced mode by double clicking it. 