please fix navmesh

the navmesh doesn’t work all the time. im making a world composition game with lots of levels
I move something like it says in the docs. the message says building navigation.
then I play and my npcs are standing around. I have a lot of trouble with this thing!
only way I can get it to work is constantly open world composition make my current level current. then finally it will work.
please fix the navmesh its buggy. doesn’t work all the time. this is my one complaint with ue. other than this ue is awesome!

Sorry you’re experiencing difficulties with the navmesh - would you mind filling out a report hereand giving our teams more details?