I have this auto ejector in my map that was working in 1.12 but now in 1.13.2 it no longer works. The mine cart is supposed to eject the player and then go into storage, but now when the player gets ejected the cart de-rails.

Minecraft 1.12 2019-02-18 15-05-02.mp4 

Minecraft 1.13.2 2019-02-18 14-57-24.mp4