pauloaguia: I have done that many times, but more than that is in a game after my move when scrolling down, to either write a message or submit a move.
While the page is still completing to load i often click away, then as the page finished loading and the page jumps, it ends up selecting, either 'switch to rich text editor' or rather than submit it clicks on 'Cancel Move' most annoying
I asked Fencer if at least the 'Switch to rich text editor' could be moved to the right hand side. He said no as it was my fault it happened, so i guess he will tell you the same