Navmesh not generating on spawned level instances containing landscapes [UE5.1.1]

Development Programming & Scripting Blueprint
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1

I have been trying to solve this for days. I am working on UE5.1.1.
I created a level instance containing a landscape and a nevmesh bound volume.
In my main level I created a landscape with navmesh bound volume to cover the landscape, the navmesh generation is set to dynamic and spawn around invokers. I set the level instance to spawn on the edge of the landscape. when I run the game, the navmesh only generates on the main level and is restricted to the main landscape ignoring completely the landscape spawned with the level instance.

Is there a workaround this issue?

2

Hello,

I have quite the same issue on my project. I have different sublevels (basically a room) with navmesh to cover the surface of that room.
I then spawn level instance of the different sublevel (rooms) to create a procedurally generated mansion.

I have noticed that the 1st level instance is created without the navmesh data. (all the other room have a working navmesh but the first spawn room does not have 1)

As a workaround, I start by creating a dummy level instance that i then delete before generating my mansion.

Hope this helps.

PS: Using EU5.2.1

3

I will try it, thanks

4

Unfortunately, it didn’t work for me, I tried creating a level instance then deleting it before generating my world, but still the NAV Mesh does not update.

5

Can you give more detail on the level you spawned, does it have a nav bound? Does it have an invoker to start the nav mesh generation before you remove it? Any detail would be really helpful, thank you.