Woo! Congrats! I’ll be your first download. 🥺

I’ve posted this to the bug tracker. Upvote bugs.mojang.com/browse/MCPE-... to give visibility to fixing mixed-material custom blocks!

Here’s a demo video of said bug. Note how within the same subchunk, a block of matching rendering type must exist for the chalice base to be made visible.

🤏🏼 In short, there are known values for everything except maces, even for jack-o’-lantern-like items (“cosmetic_head”) and generic classes (“all”, “g_armor”, “g_tool”, “g_digging”).

These indeed handle enchanments correctly per vanilla examples.

In short, custom blocks using this geometry will become laterally stretched and use double-sided rendering. You may want to consider using a custom cross model now.

These are only usable in entities and particles for the time being!

And here’s double multiply being used for lightening like night vision:

Here’s a close-up of the exclusion filter for color inversion:

Leona!