Reopening world when riding entity/boat dismounts player for some seconds

When you close a world while you are riding an entity and then reopen the world you will be dismounted first and can walk around just like normal. After about 2 seconds you will suddenly appear on top of the ridden entity, riding it.

How to reproduce

1. Ride a boat
2. Close and open the world

You will first be dismounted from the boat, but after 2 seconds you ride it again