Animator doesn't run when offscreen. See video attached.
To test this I used a setup where the state transition is the thing that is supposed to update offscreen, which should always happen. Note that the avatar isnt distance culled.
IsAnimatorEnabled also isn't set to false in this use case, leading me to think this is unintentional.
If this is intentional it should be communciated to the community clearer.
Note: Only tested on PC, unsure about other platforms