[MC-175800] Custom heads no longer work properly

Mod Notice

In 20w12a, the format of UUIDs in NBT changed. Any existing heads will be updated automatically, but commands need to be corrected to the new format for items to work properly.

To fix existing commands, change the Id tag from a hex UUID to an int array of the form Id:[I;1,2,3,4].

You can convert UUIDs using this website: https://www.soltoder.com/mc-uuid-converter/

Alternatively, just replace Id with an int array of any four random numbers, as long as they're unique for each head you do this to.

So what I've noticed when using the newest snapshot is that you cant summon in custom heads anymore and instead they show up as regular Steve heads but renamed.

I am not a program wiz, but I do think that the changes made here with UUId being written differently is what's causing it.

I understand this might not be an issue but since custom heads are a major thing, I brought its attention.

Thank you,