[Medicineguy]

Yeah, it's to prevent click-hijacking (correct term?). I assassed the risk as very minimal.

[tentacleuno]

Click-jacking seems like the correct term. Not sure what the word would be for the keyboard type of click-jacking though, where you unexpectedly present a dialog while the user is typing and they accidentally accept it by pressing certain characters...

[pbhjpbhj]

Usually click hijacking is contracted to clickjacking, but you're correct.