Navigation does not build / package

I’ve got a project based on Top Down template. I use Simple Move to Location to set the Pawn location. Everything works fine in PIE, but when I build or package the NavMesh is deleted.

I’ve tried changing the NavMesh settings in Project options - both Force rebuild on load and Runtime generation. Nothing works (When set to Dynamic the pawn goes absolutely crazy).

I’ve tried updating to 4.21, and same thing: Everything works fine in PIE, but build / packaging Nav mesh is removed (This is confirmed by using console to show nav mesh).

I’m trying to build Alpha, and have very limited launch window, please help!

i have same problem.