Half of my nav mesh modifier volume work...

Hi, I have multiple nav mesh modifier volume who all have the area type to "Not walkable".



As you can see on the picture, the area at the bottom right is working correctly, my nav mesh modifier volume do their work, but for the rest of the map, they just seeems to do nothing. Help me please...

 

did you manage to solve this? I can't seem to get objects to be 'non walkable'.