NavMeshAgents trapped inside NavMeshObstacles move erratically

Steps to reproduce:

1. Extract and open the project in [Internal link].
2. Open scene PressPlayToCreateScene.unity .
3. Press play to start the scene.
4. Observe the movement of the NavMeshAgents in the scene. To make it easier to notice the agents and obstacles in the scene view, you can select the object SpawnAgentsAndObstacles, and possibly enable the Wireframe view.

Actual results: Some Agents jump around quickly inside the Obstacle objects and they cannot get out by themselves. Some Agents move to the inner corner formed by obstacles and after pushing a bit they enter one of the obstacle (usually during lower frame rate - e.g. when resizing the scene view).

Expected results: The Agents that start inside Obstacles get quickly pushed out of them. No Agent enters again inside an Obstacle while it moves on its path.

Reproducible with versions: 6000.5.1f1

Not reproducible with versions: 

Can’t test with versions: 

Tested on (OS): 

Notes:

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