Haul trucks getting stuck

Issue description

Haul trucks getting stuck. Driving back and forth in same spot.

Reproduction steps

1. Attached save, near gold mine, and in coal pit.

Game version and build number

v0.8.6c b612

Operating system

Linux

Attachments

Dumptruck Stuck.save

I seem to have to do with their route planning. If i direct them to go to another nearby spot, the get free.

I seem to have the same issue

ONII-CHAN IM STUCK.save

Spinning truck Spinning Truck
yes and no, They drive in a circle 3 to 4 times, then they drive a little longer and they drive in a circle 3 to 4 times.