As it goes from watching others playing on 1.16 beta and learning that custom blocks no longer are viable to be used in game or even seen in crafting table, now that bug has made it into the initial 1.16 nether update release on june 23rd 2020.

Custom blocks are broken am will not show in crafting table.

How Ever Custom Items are not afflicted by this bug yet they still do not show in the crafting table book ui.

This bug has an makes it impossible to use add ons that use or depend on custom blocks to make other items or blocks. Making the point of add ons pointless if the bug is left unfixed.

Still Awesome work on The Nether Update ! It is magnificent aside from some annoying game bugs.