When a Landscape is edited with the Retopologize tool, Dynamic Navmesh is no longer generated. This was also tested with Static Navmesh and yielded the same results.

Steps to Reproduce

1. Set following options for the Navmesh
NavigationDataClass: RecastNavMesh
Runtime Generation: Dynamic
Data Gathering Mode: Lazy
Generate Navigation Only Around Navigation Invokers: True

2. Place a landscape, add navmesh, and edit using retopologize tool

3. Build navmesh

4. Setup a Navigation Invoker and place it on the Landscape

Results: Navmesh can't be generated on Landscapes that are edited by the retopologize tool.

Expected: Navmesh is generated

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Won't Fix
ComponentUE - AI
Affects Versions4.
CreatedMay 15, 2018
ResolvedAug 18, 2021
UpdatedAug 18, 2021