When a pattern provider tries to insert into the inscriber even if the inscriber already has an item inside of it, that attempted insertion resets the inscriber's progress, leading to a deadlock.
NOTE: This happens because restoring the snapshot has to trigger onInventoryChange...

Bug 1

Put inscriber and pattern provider beside to one another
Set the pattern provider's arrow pointing to inscriber
Put any press in the inscriber and make a pattern that can be crafted with the press
Autocraft more than 1 printed circuit
Inscriber wont craft