ResavePackages commandlet breaks sublevel translation

UE - Gameplay - Feb 26, 2019

Rebuilding lighting with commandlet will move hidden sublevels Confirmed in 4.23 MAIN @ CL 5194133 ...

Collision not showing after switching between No Collision and Default

Tools - Feb 27, 2019

When using Show collision it appear that the collision will not update its visibility when switching between No collision and Default. Once the collision has been set to No collision it will no long ...

LineTraceComponent does not respect bEnablePerPolyCollision

UE - Simulation - Physics - Feb 26, 2019

USkeletalMeshComponent::LineTraceComponent does not properly consider bEnablePerPolyCollision. It appears to use the component's bodies, which are empty. It should be sufficient to use UPrimitiveCom ...

RepLayout can hold onto hard references to owning objects, preventing them from being destroyed.

UE - Networking - Feb 28, 2019

RepLayouts are associated with an Owning Object, which may be a Class, Function, or Struct. RepLayouts will only be cleaned up when the Owning Object is no longer valid. RepLayouts hold references t ...

PreConstruct visualization does not appear to work for Grandchildren of a widget blueprint

UE - Editor - UI Systems - Mar 1, 2019

When creating a grand child widget it appears that the preconstuct does not behave as expected. The child widget fails to render widgets that belong to its parent's parent. ...

Is Over Hit Test Visible Widget does not return false when over a widget that is not hit test visible

UE - Editor - UI Systems - Mar 4, 2019

The Is Over Hit Test Visible Widget node does not return false when over a widget that is not hit test visible ...

Gamepad input affects multiple game instances at once, due to not needing focus.

UE - Editor - UI Systems - Slate - Mar 5, 2019

Since Gamepad input works without needing focus (which was added in 4.9 with [Link Removed]), a Gamepad's input will also affect all instances running on the same computer. Regression?: No This occ ...

Changing class of Sub Anim Instance will crash if tag is specified

OLD - Anim - Mar 1, 2019

Switching sub anim instances that have a set tag will crash the editor when compiled. This is likely due to the use of Tag as the object name. The tag does not change, and the old UObject is still a ...

High bandwidth usage on listen servers, even with bare minimum replication

UE - Networking - Mar 1, 2019

UDN user claims that in an empty level, when using a listen server, bandwidth is higher than expected - ~5.5KB/sec for two connections, and appears to be framerate dependent. Has posted screenshots ...

Post Process Volume not updating in preview

UE - Platform - Mobile - Mar 4, 2019