First portal to enter the nether works fine and the return takes you back to that portal in the overworld. Made a second portal a long way away and entering that portal takes me to the first portal location in the nether (no second nether portal is created) and exiting the portal returns you to the original (first) portal. Even if I disable the first portal the problem persists - but the game creates a new exit portal in the overworld near the original.

I have not used any third party software and this was a new seed that I started after the update was released.