A number of times now I've gotten directions from Google Maps that include a walking component over an entirely impossible area (e.g., a narrow stretch of the ocean, over a wall onto a restricted military base, etc.). This entirely bungles the routing, because every displayed route tries to make use of this impossible bottleneck.
I'd like to report a bug to fix this, but none of the reporting options seem to apply. Using the web application in a desktop browser, "Edit the map" leads to options like Fix an address, Missing place, Add or fix a road, and Wrong information about a business. None of these seem to apply to these impossible off-road walking directions.
What's the best way to report a bug in Google Maps off-road walking directions?