When you go to mob spawner (or just place one with "/setblock") in every gamemode except spectator, and then change to spectator mode, the animation of the mob is glitching.
It is glitching!! I don't mean that it is freezed like it should!
Also when a mob spawner is outside the worldborder
Comments


Confirmed.
The mob in the spawner is jittering.
After reloading the world while still in spectator mode the mob is frozen.

Relates to MC-3867.
Blah it's unproductive when you just write the same I wrote in the discription as a comment.
The point of this is the glitching animation and not the fact that a player in spectator mode doesn't effect chunk loading!