Not sure how to help on this one, short of totally attempting to re-write aspects that make this function. The visual in game is go to place an item, ANY item, and within moments it deletes off your cursor. You can still place it, but you won't be able to interact with it until restart... if it even actually writes to the DB. (Seen times when it doesn't). This is after the newest build update even on the test server (it's still happening). there HAS to be a check somewhere that is going on that is ignoring... or not verifying... that the object being placed is "allowed".