Blocks/signs not saving into worlds

Put the summary of the bug you're having here

What I expected to happen was...:
Describe what you thought should happen here: I put down the sign, paused the game, quit to the menu and went back on and it was gone, also put a quartz pillar block down, paused

What actually happened was...:
Describe what happened here: I put down the sign, paused the game, quit to the menu and went back on and it was gone, also put a quartz pillar block down, paused the game, quit to the menu and went back on and it was gone. The game seems as if its not saving progress. Same happened with stonecutter block in survival.

Steps to Reproduce:
1. Placed sign/block
2. entered a name
3. paused the game
4. quit to menu
5. tapped on my world
6. the sign/block was gone