Bug description
Tried to open the identity menu in creative. Game crashed after opening the menu when using The Aether Reborn( https://www.curseforge.com/minecraft/mc-mods/aether-reborn ). I think there is incompatibility with an entity from that mod

Game log:
https://paste.ee/p/RPJoa.

Duplicate of #277

Hoping to have this ""fixed"" (no longer hard crashes) in 1.15.0 beta. I'm going to keep #277 open in hopes of solving the actual problem in the future. Thanks for the report.