Block mappings are different from block states and item type mappings. This is required for block action packet. Literally no other packet uses this. Damn it mojang.
I don't care about this issue anymore and would rather not increase the filesize of packetevents for a single packet where the client ignores what's inside of it anyways.
Block mappings are different from block states and item type mappings. This is required for block action packet. Literally no other packet uses this. Damn it mojang.