Auto Dropping Items (Sometimes Crashes)

Bug:
-Items Drops Auotomatically and sometimes game crashes
How to:
1.Put a bow in your third hotbar slot. (From left to right, left side being 1)
2.Put Harming Arrows in your second hotbar slot.
3.Put Diamond Sword in 1st hotbar slot.
4.Hold and shoot the bow at full pullback while at the same time holding and dropping the diamond sword.
5.Then try picking up the sword it will drop everytime or any item that is put into the 1st hotbar item
PS:(Minecraft Crashes sometimes)

Device Model:
Android ZTE Prestige