Strange Save Glitch

Weird fast blinking UI after pressing "Save and Quit", Also, It can navigate things without showing the main UI, But still showing the strange blinking save UI with the word "Done!" While tapping on it too much, It kicked me back of my world with no UI, just the world. Please fix this problem. It annoying.

Edit: I can't put the video in here. It only occurs when the game played long. Also occurs in any of my world

Phone: Samsung Galaxy S4 Active LTE-A (SHV-E470S)