I like the humor of your game. The asteroid impact is well done, including the signaling before it hits. Would have been nice to to serve some more customers before everything explodes.
I think the sugar/cocoa bug also appears in other situations. I was using them after I filled the mug with coffee, which let it freeze as well.
One hint about fullscreen: When you remove the fullscreen option in the itch settings (you can do that also after you published the entry), it is easier to hit the Godot fullscreen button. The itch fullscreen button is kind of broken and covers the blue Godot button, which is doing what one would expect.