GUI Bug

Found that if I'm making a smart playlist and click back up to tracks the bottom portion where the parameters for the smart playlist were is blank and I can't recover it.
Had to go back to smart playlist, click 'ok' and then when it returned to normal move back to Tracks and it was fine.
Had to go back to smart playlist, click 'ok' and then when it returned to normal move back to Tracks and it was fine.