Items change in the HUD when looking in a chest or furnace

On my Minecraft PE survival world that I have been working on since December 4, 2016, when I go to look in a furnace or a chest, it switches around the items around in the HUD with the items in the inventory. in the pics, I am clearing out space for more builds in my world. Watch the HUD in the screenshots. The dirt in the before picture changes to jungle wood when i check in the chest.

Thanks

Alec McClain