When mining on OP Prison, when you get a full inventory it used to make a sound and it also said on the screen "Inventory Full" or something along those lines. Now when you get a full inventory, there is no sound that indicates it and all that shows up on the screen is a ".

 

Ok I will explain it, for the first time it says it it will go Full inventory then second time onwards it goes "
this mean what it said above, the sound is the same and if your familier with the sound you would understand