Description of the Bug
Whenever a cart or a locomotive is going over a junction in the north-south-direction, most of the time it renders sideways while it's over the track.

To Reproduce

1. Place 3 tracks in a row towards north/south.
2. Use a spike maul to make the middle one a junction.
3. Place a minecart on one end of the track and use a crowbar to give it a push.

Expected behavior
The cart should consistently face the direction it's going.

Screenshots & Video
Short video showing the issue
In the video the cart always behaves correctly east-west, while most of the time it render incorrectly north-south.

Additional context
Tried it in 12.0.0 as well as a fresh development build.

This is usually due a bug in Forge that tends to happen on updates... hmm...

I probably won't bother with this until I need to update to a newer version of Minecraft. I'm probably going to have to redesign how I do this.