dissapering item slot

item slot completely gone can't see any thing that is in there unless in inventory or paused. can't scroll up or down. possibly a hot key
the I've done in attempts to get it back:
-looked in controls, found nothing
-looked in video settings, found nothing

• mucked around in video settings, did nothing
• quit world and restarted, did nothing
  screen shot below is me freaking out. 2014-8-22_15.30.29
  there are no item slots
  the screen shot below are after the game is restarted 2014-08-22_16.01.12