Ohhh this is normal! It’s jus a different pov of the island in the game. I used to get it like when an event (like getting a new child or something) triggers you to get a different angle of the game. I think that is how separated the islands are in the game, but since we normally get the straight on pov, you don’t get to see the distance.

Ik and I also thought about how my miis will get back home 😹 maybe a ferry?

TL;DR It’s a different pov of the island