Unreal Engine Issues

The return value of int64 FMath::RandRange() is biased

Looping Gameplay Cues are not removed if GameplayCueNotifyTagCheckOnRemove is true

GameplayCues inheriting from GameplayCueNotify_Actor no longer have their Removed functions called when removed via UAbilitySystemComponent::RemoveGameplayCue if GameplayCueNotifyTagCheckOnRemove is ...

Unable to set simulate physics to false through blueprints

If "Editable when Inherited" is disabled for the static mesh component the issue does not occur. The bug could be related with other UDN cases:https://udn.unrealengine.com/s/case/5004z00001ruXmEAAU ...

Common UI/Enhanced Input UI action binding issue

They've nailed it down to the following logic FUIActionBinding::TryCreate which doesn't check for the InputAction specified.// Make sure there is no existing binding for the same action associated w ...

When change a skeletal's collision from QueryOnly to QueryAndPhysics at runtime, dynamic properties won't be updated

It seems in the FBodyInstance::InitDynamicProperties_AssumesLocked, we early out when the body instance's collision is QueryOnly, but actually we only recreate its physics state when changing from N ...

Actors in a folder in outliner are moved to the top level by duplicating the world partition level with WorldPartitionRenameDuplicateBuilder

Spawnable Level Instance via Sequencer in WP map

ULevelInstanceSubsystem::OnActorDeleted: check(!IsEditingLevelInstanceDirty(LevelInstance) && !HasDirtyChildrenLevelInstances(LevelInstance)); ...

Nanite mesh is shown with player collision

When Sweeping a sphere over a heightfield or trimesh when the sphere is in initial overlap we don't get the exact correct hitpoint. It seems to be the nearest vertex to the hitpoint instead

Actors with Child Actor Components get out of sync when undoing component transform in child Blueprint

Undoing a child actor's component transform in its Blueprint editor isn't reflected in child actor instances in the level editor. Subsequent transforms are also not propagated after the undo breaks ...