The latest update has caused bookshelves, chiselled bookshelves and red beds to crash players on our server if they join when in a radius of one of those blocks. These are the only blocks causing it as far as we are aware. It’s only causing this for bedrock players, and was fine before this new update. 
Example:

players tried joining both our oneblock and survival servers, both spawn points of these servers had bookshelves in them, after removing the bookshelves players stopped crashing, however due to it being a smp there are many of the broken items out there and is causing players to crash when they try go to their bases.