UE 5.6 World Partition – Level streaming causes crash in packaged build

AyaGamesinc
Sat, 20 Dec 2025 14:19:53 +0000
World Creation

Hello,

We are experiencing crashes related to level streaming while using World Partition in Unreal Engine 5.6.

Details:

UE version: 5.6

World system: World Partition

Project: Blueprint-only

Crashes occur during level streaming / cell loading

Editor works fine, crash happens mainly in packaged build

The crash seems to happen when streaming cells load or unload at runtime. We suspect it may be related to actor references, loading order, or streaming timing.

Has anyone encountered similar World Partition streaming crashes in UE 5.6?
Are there known causes or recommended debugging steps to identify which actor or cell causes the crash?

Any advice would be appreciated.
Thank you.

7 posts - 3 participants