When a piston is used to push a minecart onto the end of a track (where the rail is aligned with the direction of motion), the minecart does not continue moving on the track. Instead, it immediately stops and stays there until manually moved. This happens even if the minecart is pushed onto a powered rail segment.

Steps to recreate:

1. 
2. Press the button to activate the piston.

Expected: Minecart pushed onto track and continues moving.

Actual: Minecart pushed onto track and stays still on first segment.