Exiting Nether Trouble

I have been having trouble getting out of the Nether on a "vanilla snapshot survival server." This problem only started occuring in the recent snapshots.
I expected and it used to happen where I come out normally.

What has been happening is that I exit the Nether but I get put back into the portal and sent back to the nether, unable to get out. On a few occasions the portal send me off in the air in the overworld or off in the air in the Nether a few times.

Steps to Reproduce:
1. Join Server.
2. Enter Nether through portal.
3.Exit Nether through portal.