Hoppers do not remove items from double Chest above it

Mobile: Samsung Galaxy S4

This occurs with both normal and Trapchests

Placed a double chest over a hopper - feeding into Dropper
Placed Items into Chest
Items do not go into Hopper to pass onto Dropper - they stay in chest

Place Single Chest over hopper - feeding into Dropper
Placed items in chest
Items go through Hopper into Dropper