World Partition: Landscape Loading Editor / Build Crash

When converting an existing level with a large landscape (large enough to be spatially loaded), the resulting game world will crash in editor and build once landscapes parts are loaded spatially.

To fix this World Partition crash enable ‘Is Spatially Loaded’ on each landscape. Secondly, the landscape has to be set to loaded.

ps. This was reported to the bug tracker today.

Landscape-World-Partition-Crash-Spatially-Loaded

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It turns out the issue is still present when loading a landscape which was not previously visible on level start.

What I have done now:
Disabled HLOD for Landscapes
Removed from DataLayers
Disabled Spatially loaded
Made it visible pre-build.