Navmesh path issue with platforms

I have a ground terrain with stairs that lead up to a platform, I am using the component workflow and the terrain, stairs and platform have a navmesh component. I have a simple test setup for the agent to follow the player around but if the platform navmesh is enabled on start the agent does not move, however if i disable the platform navmesh the agent will work as intended on the terrain and on the stairs, no idea why the platform is causing it to wig out. Any ideas?

 

That's incredibly strange. What does the agent do if you disable the platform on start and then enable it while the agent follows? Also, are you certain you aren't somehow forcing the NavMesh to be continuously rebuilt via that platform?
Please provide as much info as possible on your setup, with what you're showing here you shouldn't have any problems.

 

I isolated the issue and it sure does seem like a bug. My player geometry is childed under the main Player object, the top level object has the main colliders, scripts and animation controller etc. If I add a collider to the child object the issue will resolve, but if the child object has no collider then the strange platform issue restricting movement on the agent will occur. I have no idea why this is, why a collider on the player would affect the agent being able to calculate its path and move. The only AI/Navmesh command I am using is SetDestination and the destination is set to the parent Player object's position.