Why is my world-partitioned NavMesh only being generated partially?

It’s a Engine bug that is already fixed in ue5-main branch on Github.

Here is the solution to fix this bug if you build engine from source code:

1./Engine/Source/Editor/UnrealEd/Private/WorldPartition/WorldPartitionNavigationDataBuilder.cpp


TObjectPtr compilation fixes ahead of enabling GC barrier

2./Engine/Source/Runtime/Engine/Private/WorldPartition/NavigationData/NavigationDataChunkActor.cpp


Fix for ANavigationDataChunkActor having wrong actor location

Hope this helps.

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