There is a duplicate pipe on the hole, I assume the static one that doesn’t move at center. It has collision so it will stop you if your ball collides with it while inside the pipe that is moving.
Steps to Reproduce
Enter Hole 18? I doubt anything I did would specifically cause this to happen.
What I expected to happen
No duplicate pipe to be in the way, stopping my progress completely.
What happened
Duplicate pipe on the dropdown to enter the winding trail.