How to get navmeshagent to ignore trees on terrain

There are quite a few posts about this subject and the only workaround that seems to work is to delete all of the trees, bake the navmesh, and then use UnDo to put the trees back. This would be a great deal of work for my terrain, and if I adjust the terrain, I have to do it all over again. Has anyone found a more elegant fix for this?

 

I'm sure there is a more elegant solution. Several options come to mind:
Make your tree prefabs non-static. The navmesh will ignore anything not static, you could also remove collider or the navmeshobstacle.

 

@newjerseyrunner Thanks for the tips! I have a number of different tree types, so I'm not keen on removing the colliders on all of them. My workaround, for now, is to use the new (beta) Navmesh Surface because (at least for now) it ignores trees. Hopefully when Unity implements that part, they'll provide a toggle like the useless one that is currently part of the Navmesh. Thanks again for taking the time to help.

 

Check out this thread: https://forum.unity.com/threads/does-the-component-navigation-work-with-terrain-trees-yet.488074/

 

Have you tried adding a nav mesh obstacle to the tree prefabs?

 

Sorry for joining this discussion late, but I encounter the same problem and found a solution. I want to use grass and tree prefabs, but I want the Nav Mesh to ignore the grass, and only include the tree. I'm populating the grass and trees using the "Paint Trees" in the Terrain component, and whenever I want to add Trees (Paint Trees>Edit Trees) there is an option for Nav Mesh LOD Index. So, if the prefabs you want to add as tree has LOD, you can choose which LOD Index to be calculated in the Nav Mesh. And so, I make a fake LOD level for the grass, and basically assigning nothing on that LOD level. And if I choose this LOD level for the Nav Mesh, the grass will be treated ass nothing, and will be ignored in the Nav Mesh.

Tested on Unity 2021.3.25f1
Hope this help.