Collisions aren't disabled by UPhysicsConstraintComponent in non-blocking streaming levels

UE - Simulation - Physics - Sep 5, 2019

When using a constraint to disable collision between the constrained bodies, collisions are not ignored if the constraint is part of a streamed in sub level that does not block on load. This also oc ...

After adding MovieSceneObjectPropertyTrack from BP or Python, clicking the pull down of the added track occurs crash

UE - Anim - Sequencer - Sep 6, 2019

When MovieSceneObjectPropertyTrack is added from BP or Python, PropertyClass of UMovieSceneObjectPropertyTrack becomes null, so it crashes with the following processing of SPropertyMenuAssetPicker : ...

Material rendering incorrectly when using DepthFade on iOS

UE - Platform - Mobile - Sep 9, 2019

This issue only occurs on iOS and does not reproduce on Windows or Android. I have seen that the SceneDepth value of the DepthFade node may not be compared correctly. ...

UAnimSequenceBase::GetNumberOfFrames off by 1

OLD - Anim - Sep 10, 2019

Creating a montage from a default frame rate and rate scale sequence reports 1 less frame than the sequence. The difference is a result of UAnimSequence overriding UAnimSequenceBase::GetNumberOfFram ...

Imported Custom Convex Collision Mesh has Topology Modified

UE - Simulation - Physics - Sep 11, 2019

Importing custom pre-triangulated UCX collision data, can modify the topology of the mesh producing an inaccurate collision shape. ...

255x255 Quads Landscape on mobile is broken

UE - Platform - Mobile - Sep 13, 2019

This issue is reproduced on mobile devices. According to the information from the licensee, it occurs with the following settings.[Link Removed] When executed, the following warning is displayed."L ...

Root motion with SubAnimInstance can cause notifies to not trigger.

OLD - Anim - Sep 16, 2019

Setting up root motion in a sub instance to RootMotionFromEverything seems to cause the sub instance to evaluate, and override the notifies of the animation that was playing, which prevents the noti ...

Animation sub instances tick twice with a post processing BP

OLD - Anim - Sep 18, 2019

An animation's sub instances will tick twice per frame if a post processing BP is set. ...

Upgrading from 4.22 to 4.23 can break emitter inheritance

UE - Niagara - Sep 20, 2019

Copied emitters will have their inheritance broken when migrating from 4.22 to 4.23.  ...

Shots with Time Scale less than 1.0 do not render from master sequence

UE - Anim - Sequencer - Sep 20, 2019

Setting a shot's time scale to less than 1.0 will cause it to not be rendered. ...