If you join a multiplayer server, disconnect while it says "Connecting to server", and join a singleplayer world, you should be brought into a the server with collision acting like you're in your singleplayer world

What i expected to happen was:

I would join my singleplayer world and it would act like it should

What actually happened was:

I joined the singleplayer world, but once I was in I was immediately brought to the server

Steps to reproduce:

1) Connect to a multiplayer server (the connection must take long enough for you to load up a singleplayer world. I accomplished this by binding the server to a Radmin VPN network)

2) Cancel the connection, and join a singleplayer world

3) You should join the server once you load in to the singleplayer world

A video:

https://streamable.com/pphezl