Randomly when playing various worlds (particularly pre-made maps) the game will stop allowing block breaking (block breaking loses its animation and if the tile breaks the object is lost), eating, dying (damage) and inventory/ chest access - the only available action is block placing - this is not localised to one world, it happens in multiple worlds)

Then, if I try to save and exit, the saving screen (game is saving, do not exit or close game) message pops up and stays there infinitely (I left it trying to save for over an hour to no avail)

What I expect should happen: 

The game shouldn’t stop allowing me to do basic controls

The game should successfully save the game and not get stuck trying to save