Unreal Engine Issues

Discrepancy in screen data read back in Materials from screen UVs

This needs to be debugged to see where the data discrepancy comes from. ...

Anisotropic metallic material and area lights don't work

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 ...

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: ...

Crash when copying PF_Stencil format from the GPU to the CPU

This is a crash related to copying depth-stencil render targets to the CPU. See linked UDN for more info. ...

Arithmetic assignment operators (e.g. +=, *=) in Niagara inputs are applied twice .

Arithmetic assignment operators seem to be applied twice when committed in the Niagara stack.  This occurs when entering *= 2.0 for example into a float input. This may be the result of the SNiagar ...

Keep Playback Range In Section bounds can cause Actor Sequence range to be inclusive

FSequencer::UpdatePlaybackRange does not check the exclusivity of the new bounds when setting them, but UMovieScene::UpgradeTimeRanges does. ...

Sequencer- Crash on restoring state when a user has animated level visibility as well as skeletal animation on an actor in the invisible level

When a level sequence animates level visibility as well as skeletal animation on an actor within that sub-level, restoring state will first unstream the level, which will unregister the skeletal mes ...

Visible dithered quantization to remove banding in New Temporal AA Quality

Since changing the temporal history buffer to 11:11:10 from FP16, it looks as there is visible dithered quantization to remove banding when rendering. (Taken from conversation on Forum Post linked f ...