Problem with navmesh

I didn't change anything, but after rebake something went wrong.(maybe after update unity 2019.2.1f -> 2019.2.9f)
Before

After rebake

So npc can't move and i don't understand why. On other scenes everyting ok.
Maybe someone saw this problem

 

Hello and welcome @LazyVol4onok

Did you try to adjust NavMesh baking options? Try adjusting Voxel Size under Advanced options in Navigation panel.

That being said, I haven't compared NavMesh settings between recent versions.

EDIT: Just tried it out and I seem to get OK looking navMesh in correct scale (i.e. human scale, if 2 system units is a character's height.)

 

Tried voxel size, but it didn't help. I have a default settings i think, but i can't understand why walkable area higher than floor

 

Well, the NavMesh is always slightly above the polygons. Are you sure your scene is still the same scale? You didn't re-import your scene model or anything like that?

 

Well. If the problem persists, you could try NavMeshAgent.baseOffset? But it would be better to figure out what's wrong. I can't get that kind of results on 2019.2.9f1.

 

Oh...Thank you very much. You helped me understand why it happened.
But, can you tell me, please, how fix it?
I copied models and some rooms from other scene and after it happened. So, only delete it can help? It is first time when i met this problem...
Really, big thank you!