When you copy a tunnel with the schematic-cannon, the tunnel is not set correctly:

This issue has been marked as stale because it has been inactive for 3 weeks. It will be closed if it remains inactive for another 3 weeks.

This issue has been closed since it has been inactive for 3 weeks since it was marked as stale.

u mean "funnel"?

As you can see in the picture;
I mean TUNNEL!!!