Hi ,
Unfortunately I haven’t been able to reproduce any errors on my end with this. When I place the object with “Is Dynamic Obstacle” placed the navigation mesh seems to react appropriately. Additionally, if I open the standalone game the navigation mesh seems to react as I would expect as well. Do you have any other steps I can take to reproduce this on my end? Does this occur in a clean, blank project with no additional content? Is it one mesh or any static mesh this occurs on?