When an entity (tested on blaze) with {NoAI:1} tag gets unloaded and then reloaded, it becomes invisible and loses its hitbox but still keeps its sound effects and particle effects. Relogging fixes the issue.
MC-80089
Blazes with NoAI get invisible upon chunk reloading
Resolved
Duplicate
0
filips romāns
(Unassigned)
Unconfirmed
Minecraft 1.8.4
Retrieved
Isn't that related to MC-65040 ?