Dissappearing hotbar

When i was playing MCPE 1.0.6.52 when i opened my inventory and closed it instantly My hotbar dissappears. I checked if my hide GUI is on but its off
I changed my gamemode to creative but the hotbar still gone and i change back to survival and the hotbar. I tried to kill myself and the hotbar is still gine. Only i can do was leave the game and play the world again and the hotbtar is back but plsss Still fix this bug