Hm, did you see a little pause icon in the top right of the column? If so, you probably had your mouse hovering over that column. It pauses on mouse-over so y

Hm, did you see a little pause icon in the top right of the column? If so, you probably had your mouse hovering over that column. It pauses on mouse-over so you can read something that you see is interesting. Edit: Having said that... yes, I'm sure there are bugs!