This road does not allow U-turn back down Khalid bin Waleed, but navigation is still guiding me back down

OSRM still taking a left turn into al Nahdha street. This is not permitted

At this point OSRM is taking the A712 Eastbound to Dumfries. This should continue on the A75 as per Google maps

This road does not allow U-turn back down Khalid bin Waleed, but navigation is still guiding me back down

This is the entrance to the old (now blocked-off) tunnel.
I added a change set to get the barrier positioned properly changeset/159372023

All routes from the faxfleet street estate are beginning from Pumphouse Lane but there is no such access from here.
I have confirmed that there are no one-way systems here in the hope that the route directs vehicles down to Morville Street

no vehicle access here. By foot only

Why is there no left to turn allowed here? Cannot see any change sets causing this

There is no access down drake street. This has been a tram only route I believe for several years.

Routes not passing over this bridge for some reason. There is no road closure here as confirmed by locals.