A new update 1.0.2 is available on Android, and should fix this issue, please update your game!

If the issue persists, can you try to:

1- Open your inventory

2 - Swipe down the Quick Settings panel of your phone

3 - Opening the menu and closing it to make the UI re-appear

4 - Kill the app and launch the game again

If that doesn't work, please send us a video of the issue by using the in-game chat ! 

Our apologies for the inconvenience.