Nautiluses do not follow the player when quitting the game when near them or when riding them

If you tame a nautilus, then saddle and ride it, and save and quit when mounted on the nautilus or near it, then go back into the world, the nautilus will not follow you when holding fish, and will continue to not do so.

NOTE: if you get out of their following radius, then save and quit, they will follow you if you get near them again. This will only happen if you save and quit when near the nautilus.

Here are the steps to reproduce said bug:
Tame a nautilus
Saddle it
mount it and/or make it follow you
Save and quit
Relog back into the world
The nautilus will not follow you at all when you un-mount it or if you left when it was following you with fish in your hand

The expected result is when you get off and/or make it follow you, the nautilus would follow you when holding any kind of fish, the actual outcome is the nautilus will not follow you anymore even if you have fish in your hand.

I really hope you fix this bug!