With Generate Navigation Only Around Navigation Invokers enabled and Runtime Generation set to Dynamic Modifiers Only, AI characters with Navigation Invokers do not generate a nav mesh around them if spawned during PIE.

Reproduced in 4.9.1 binary and Main (CL 2695010)

Steps to Reproduce

1. Open the attached project
2. Simulate
3. Stop PIE
4. Change Project Settings > Navigation Mesh > Runtime Generation from Dynamic to Dynamic Modifiers Only
5. Simulate

With Dynamic Runtime Generation, the AI character generates a nav mesh (it uses a Navigation Invoker component), but with Runtime Generation set to Dynamic Modifiers Only, no nav mesh is created and the character cannot move

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By Design
ComponentUE - AI
Affects Versions4.9.14.11
CreatedSep 17, 2015
ResolvedSep 21, 2015
UpdatedJul 14, 2021
View Jira Issue