This is NOT a duplicate of MC-7324, which had a different stack trace to my bug, although it had the same name. It is also not a duplicate of MC-6804 as this bug is incomplete, whereas mine contains a full crash report.

When multiple TNT minecarts collide (I used 5), the game lags up, they make the rail sound continuously and explode with stronger than usual force. The game then crashes with a "Ticking Entity" bug.

What I expected to happen was...:
The minecarts produce the equivalent of 5 TNT explosions upon colliding, or do nothing.

What actually happened was...:
The minecarts stopped, and my game lagged up. I got the "dirt screen of death" which then oddly disappeared and returned to the game. I heard explosions and saw items flying away but the terrain did not update for a few seconds, then I saw a huge square TNT crater pattern (characteristic of the old Tekkit Nukes (THIS WAS NOT TEKKIT OBVIOUSLY)). The game then crashed. Earlier, it did not crash but lagged so badly (0fps, not responding) that I had to force quit.

Steps to Reproduce:
1. Create some sort of long, booster powered railway that ends in a wall.
2. Place multiple TNT carts at the end and fire them all at the wall.
3. They will stop at the end and lag the game before exploding and then crashing the game.

This is NOT a duplicate of MC-7324, which had a different stack trace to my bug, although it had the same name. It is also not a duplicate of MC-6804 as this bug is incomplete, whereas mine contains a full crash report.