well, I have 4 rows of hot bars up and playing the game as I always do then all of the sudden the 3rd row looks exactly like the 4th row. 3rd row was full of macro's and they are gone. ( the macro isn't gone, it's just not in the hotbar anymore ) How did I get them set back? More importantly.... How did they get changed? is it some kind of shift-scroll thing?
The hotbar spun, this happens to me all the time as well and it really annoying. Right click the bar and chose hotbar settings, put a check mark in besides "show spinner" use the spinner to change it back and then turn it off again.
