I don't think I'm going any more crazy than normal, but I'm surprised I can't see any other meta mention so far. This started happening recently on at least SO and ubuntu.SE, and occurs in at least IE and Firefox. So I'm guessing it's a deliberate feature not [bug]. But I'm not keen.
It's not standard in any browser for a
<textarea> to submit when Enter is pressed; the behaviour to me seems spooky and undesirable. I've already accidentally-commented more than once and had to delete the comment and drag the text back into editing.
(I realise you can't actually have a newline in a comment, but I've often used newlines to separate thoughts I'm editing together into a comment, or maybe bits to overflow into a subsequent comment. I don't really want to have to break out the text editor to get this ability.)
May I have my Enter key back please Sir?