Just had my first windmill break. Normally not a huge deal, but it turned into a generator with a few... interesting properties:
* Generator is burning, as if it were generating power
* The "fuel" seems to be the same as the first item in your inventory. Attempting to take it out causes all sorts of inventory glitches (like how furnaces were hosed in 1.337 due to having the wrong GUI ID)
* I can't take the generator down; right-clicking with a wrench makes the wrench sound, but just opens the GUI.
Not a critical bug, but annoying. 100% legit, stock server. I can provide screenshots / saved world if necessary.