url-path-map not being created correctly

[deewhyweb]

Running through the final part of the workshop, the "Deploy Pull Request to staging slot" workflow is creating a slot e.g. /pr-1
To create this slot there is a routing rule creating on the gateway e.g. "/pr-1,/pr-1/*"
When I try to access this route via /pr-1 I am getting "Not found"

If I go into the Azure portal and manually edit the routing rule to anything and the change it back to "/pr-1,/pr-1/*" the route now works, /pr-1 shows the app correctly