Steps to Reproduce
  1. Make sure Auto Create Navigation Data is enabled in the project settings.
  2. Place a landscape on the level.
  3. Set the Navigation Geometry Gathering Mode of the landscape to Lazy.
  4. Sculpt the landscape to change its shape.
  5. Make sure the Navmesh is not updated.

Have Comments or More Details?

There's no existing public thread on this issue, so head over to AnswerHub just mention UE-135209 in the post.

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Unresolved
ComponentUE - AI - Navigation
Affects Versions4.26.2
Target Fix5.0
CreatedNov 17, 2021
UpdatedNov 18, 2021