Unreal Engine Issues

Crash during save level and successive load level

Changing the Max LODLevel on a landscape causes a crash in content examples. ...

Can't rollback to older version of Datasmith Max Exporter installer when SketchUp plugin is installed - error code 2753

Post Process Volume Priority Doesn't Affect Post Process Materials

Post process volume priority doesn't affect post process materials. Found in 4.19 CL# 4033788, 4.20 CL# 4302132, and 4.21 CL# 4369303 ...

Apex Destruction - Destructible Mesh disappears after Fracture

Fracturing a mesh with Apex Destruction in 4.24.1 (CL-10757647) causes the mesh to disappear after clicking Fracture. This behavior was not present in 4.23.1 (CL-9631420). Unable to confirm this in ...

USD Alembic - Groom cache shape changed from MAYA after imported into UE.

GAS: Ability that destroys owning actor on activate causes crashes due to ABILITYLIST_SCOPE_LOCK

A GameplayAbility that destroys its owning actor inside ActivateAbility() causes a crash, because actor destruction will modify the ability list but ActivateAbility() is called within an ABILITYLIST ...

IMC incorrectly retains the state of a modifier set in a lower priority mapping context.

Landscape overdraw bug

When Landscape GPU Culling is operational, patches of Landscape will have heavy overdraw. This requires Nanite and Lumen to be disabled - the test project is set up with this by default. This quad ...

Potential wrong branch condition about DFAO and Niagara GPU SDF Collision

Particles using Distance Field collision can have their collision controlled by "r.DistanceFieldAO". It appears that the condition in "ShouldPrepareGlobalDistanceField(...)" from DistanceFieldAmbie ...

NavMoverComponent ConsumeNavMovementData returns true on any repeat call within the same game frame

UNavMoverComponent::ConsumeNavMovementData returns true on any repeat call within the same game frame, even when there is no nav movement to report. Callers that trust the return value then act ...