When joining a world(just tested on singleplayer) and picking up an item the item is not shown until you open the inventory (deobfuscted environment).

Also it would be nice to have a creative baubles inventory and when sitting on a horse the horse inventory does not open. Just check if the player rides a horse and show their inv instead of doing nothing.

Great mod btw!

The first one sounds like a vanilla bug and the second one is a bit hard to do without messing with MC code itself.

Wouldn't the second only requiring to check if the player is riding a horse? Perhaps only do it if the baubles key is the same as the regular inventory key?