Unreal Engine Issues

Subsurface shading model is broken when ray traced shadows are used in 5.1+

VSM cached shadows not updated-invalidated when masked material parameters are updated at runtime

Iris - Function descriptors will prevent protocols from being marked as fully push based

Anisotropic metallic material and area lights don't work

Component Visualizer EndEditing() never called in Blueprint viewport

User reports difference in ComponentVisualizer behaviour between level viewport and blueprint editor viewport. Details and repro in the referenced UDN ticket. ...

Logging out and then logging in as a new user results in slate creating multiple Slate User IDs

I believe this is happening because when you change your logged in user, the Slate Application will automatically create a new second slate user with an ID of 2. This is bad because the Slate App is ...

Gameplay Effects with instant duration fail to be predicted if a duration magnitude was previously set

The Duration Magnitude property is not zeroed out if a Gameplay Effect's duration policy is changed from HasDuration to Instant. As a result, UAbilitySystemComponent::ApplyGameplayEffectSpecToSelf e ...

Blueprint "Set by ref" (UK2Node_VariableSetRef) does not mark properties dirty for push replication

When using Push Replication with blueprints, UK2Node_VariableSetRef nodes do not mark a property as dirty and so the variable is not replicated. ...

Cannot key font material for UMG Widget animations

Lyra - Grant Nearby Interaction Ability Task used as source object but doesn't replicate

UAbilityTask_GrantNearbyInteraction passes itself as the source object when making the Interaction Ability Spec in UAbilityTask_GrantNearbyInteraction::QueryInteractables. This causes the "Warning: ...