The game crashes when a cauldraon pulled or pushed whithout pulling or pushing it in it's empty state.
So you have an empty cauldraon, just placed it pulp or push it with pistons, nothing will happen put wather intő the same, before mainsoned cauldraon, pulp/push it, nothing will happen.....BUT get an another cauldron placed it, put wather in it without pushing/pulling it try to push/pull it....the game will crash.
I used a Wink Elite 7.85 tablet
I attached a recording. 🙂
Thanks for your report! This is however a Duplicate of MCPE-14805 – If you have not, please use the search function in the future, to see if your bug has already been submitted, as currently over 47% of tickets are being closed as duplicate.