Just bought the Pro version. Was fiddling around with the Layered Grid graph and don't know how to solve this issue: (zoom into image for better view)
As you can see indicated by the green arrow, the obstacle is considered when building the extra layer (look at the top of the box), but it is not actually blocking the lower layer, even though it clearly does so. I thought that could be related to where the library tries to sample the layers, so I've changed its height so it extends a few 10s of units below ground, but the result is the same as a "shallow" block.
A similar problem can be observed on the "arch" to the right: it only cuts the node connections precisely intersecting with the grid, not the borders of the arch, which would be of unsufficient height for anything to go through (only the center should be navigable below).
Here is the setup for the layered graph:
If I set the obstacle's layer to something other than default and add that layer to the "Collision testing" mask, it does block the grid, but then it doesn't create a second layer.
How can I get the lower layer to be blocked?