If you pause the game and go to the main menu then enter back into the game then you'll have to pause and then unpause the game. (If you click start then pause then click main menu then click start again then you have to pause then unpause)
When you hit the main menu button and then hit play again the game will be frozen. Just hit the escape button again and this time hit the play icon and the game will work as it should.
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 "Rolling Doom"){kind=icon}
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