By crystals you meant glasses right?
Check the world's setting, did you enable "tile drop"?
They merged 1.15 inside 1.16. The Nether Update is 1.15 (game fix and Java parity) + 1.16
This is a very useful feature. Intended or not, I think this should be left as it is for flexibility.
The worst part of this bug is sometimes it even prevents me from rolling back to a previous save file and lock everyone out of Realm (infinite loading screen).