This bug allows 5-15 minecarts to merge together and form a strange looking minecart. This allows the minecarts that are merged together to shoot of track and ride of of the minecart rail. The merged minecart will ride indefinitely until it hits a corner wall and will start up again if you try to keep going forward while inside of and this merged minecart will instead shoot backwards. I found this bug when making a small circular track where a ton of pigs would ride the mine cart. Then a large chunk of the mine carts shot of and rode away while carrying pigs in them.

*What I expected to happen was that there would just be a ton of minecart riding in circles.
Describe what you thought should happen here

*What actually happened was a ton of minecarts shot of of the small circular track that i had just built and rode even off of minecart tracks
Describe what happened here

Steps to Reproduce:
1. First you place a small 2x2 minecart track.
2. Then you place ass many minecarts on the track.
3. if you push this and the minecarts start moving there is about a 50% chance that this "Merged Minecart " glitch will occur.