Unreal Engine Issues

Geometry Collection cluster handles leaking and causing ensures with field systems

Geometry Collection cluster handles leaking and causing ensures with field systems. The licensee has shared their analysis: We have been tracking down an assert that seems to happen occasionally wh ...

LOD glitch when using Control Rig with Import Skeleton node

In Unreal Engine 5.6 and Main, a glitch occurs when switching between LODs in a character setup that uses a Control Rig to dynamically load the skeleton hierarchy through the Import Skeleton node in ...

Heterogeneous Volume Actor causes ensures to trigger in Debug builds

When a heterogeneous volume actor is used with a volume material in a debug build, the following ensures are triggered: Ensure condition failed: UniformBufferValue || EnumHasAnyFlags(AutomaticallyBo ...

UE 5.6 broke the Collaborative Viewer Template pawn's Mouse Look

UE 5.6 broke the Collaborative Viewer Template pawn's Mouse Look. Creating a 5.6 project based on the Collaborative Viewer Template and Playing-In-Editor, we notice that the Mouse Look functionality ...

Copy-pasting an actor property that is a set of strings adds extra quotes and escapes

Copy-pasting an actor property that is a set of strings adds extra quotes and escapes. The licensee has reported: The problem doesn't happen for example for properties of types set of integers, nor ...

Objects are culled prematurely in the right eye

AreaNavModifiers generated by SplineNavModifierComponent have the component-to-world transform incorrectly applied twice

USplineNavModifierComponent was made available in UE 5.4. It generates several FAreaNavModifier instances covering a region with a certain thickness around a USplineComponent, and worked correctly u ...

ULevelInstanceSubsystem::CreateLevelInstanceFrom() is not honoring parameters bAlwaysShowDialog and LevelPackageName

A Level Instance or Packed Level Actor can be created through editor scripting by using function ULevelInstanceSubsystem::CreateLevelInstanceFrom(), which receives parameters packed in the FNewLevel ...

Environment Query System (EQS): EnvQuery runtime template object can be created with a non-unique name, corrupting the EnvQueryManager cache

On file [Engine\Source\Runtime\AIModule\Private\EnvironmentQuery\EnvQueryManager.cpp:812], function UEnvQueryManager::CreateQueryInstance() uses StaticDuplicateObject() to create a new UEnvQuery* (d ...

EncompassesPoint always returns fase on ANavMeshBoundsVolume due to missing BodyInstance

When calling EncompassesPoint on an ANavMeshBoundsVolume, the method always returns false even if the target point is clearly within the visible volume bounds. This occurs because AVolume::Encompas ...