SCS child scene component instances can be registered out-of-order with non-scene component instances (regression).

UE - Gameplay - Components - Sep 7, 2016

This behavior is a regression in 4.12. Essentially we switched to attaching child components as part of the OnRegister() logic. This caused all root-level SCS components (including non-scene compone ...

Child actor components get duplicated when duplicating a level (extra duplicates)

UE - Gameplay - Sep 7, 2016

Child actor components get duplicated when duplicating a level (extra duplicates). The duplicate level has more instances of the child actor component than the original ...

Widget Component Ignores Bounds Scale

UE - Editor - UI Systems - Sep 7, 2016

When a widget component is using it's own bounds scale the value doesn't appear to have an effect in the editor. To verify this I added a parent component and used it's bounds scale with the same va ...

Expose and document MAX_ARRAY_SIZE and MAX_ARRAY_MEMORY from SerializeProperties_DynamicArray_r

UE - Networking - Sep 7, 2016

Currently, there are some hidden constants that are used to in networking to limit sizes of arrays. After discussion, these were just chosen without much consideration other than to limit bad behav ...

Editor crash when a spline component is added to a blueprint and compiled

Tools - Sep 7, 2016

Most recent user affected CL: 3106830 (4.13.0) Error message: Access violation - code c0000005 (first/second chance not available) Source Context: SelectedKeys = SplineVisualizer->GetSelectedKey ...

Crouching/Uncrouching while standing on a physics object will cause the object to behave erratically

UE - Gameplay - Sep 7, 2016

Crouching/Uncrouching while standing on a physics object will cause the object to behave erratically. Even if the CharacterMovement component has Physics Interaction disabled, it will still effect t ...

HLOD generated proxy doesn't create or assign target lightmap coordinate index any longer

UE - World Creation - Worldbuilding Tools - HLOD - Sep 6, 2016

There are instances where HLODs will either generate a lightmap but not assign it to the correct Lightmap Coordinate index from the target lightmap setting in the HLOD outliner or the Lightmap will ...

AvfMedia: Many file types supported on macOS and iOS are reported as not supported in UE4

Media Framework - Sep 6, 2016

See also https://forums.unrealengine.com/showthread.php?64082-Media-Framework-Roadmap&p=590662&viewfull=1#post590662 ...

SetAngularPositionDrive and SetAngularVelocityDrive in ConstraintDrives.cpp have unused parameters

UE - Simulation - Physics - Sep 6, 2016

In ConstraintDrives.cpp, SetAngularPositionDrive and SetAngularVelocityDrive do not use "InEnableTwistDrive" and instead assign "TwistDrive" to "InEnableSwingDrive". void FAngularDriveConstraint::S ...

User confusion over Visibility/Hidden in Game track

UE - Anim - Sequencer - Sep 6, 2016

User confusion over Visibility/Hidden in Game track. We're running into some issues where it's only switching Hidden in Game when you Play, which essentially does nothing with lights, among other p ...