Server freeze with panels
I managed to freeze the game using the nc_doors mechanics. Here's the smallest build I could find to recreate the bug:
Place 6 panels like so: (note that the hinges are on the outside except for 1 in the middle which is turned 90degrees)
Then place 6 ash under the panels. Then punch the long side:
Expected result: All 6 panels rotate.
Actual result: The game freezes.
Oddly, I couldn't get the game to freeze without the ash blocks underneath. Maybe this has something to do with the behaviour of panels pushing falling nodes?