Issue At Inventory

Phone : Xiaomi Redmi Note 3
Android : Android 6.0.1
OS : MIUI

So much issue at inventory in MCPE 1.2.0.15
1. Cant Seperated Slot
2. Cant Remove item in inventory
3. Cant Throw Items... So i cant share with my friend

Note : All issues is in the video 👇 please Fix !!