WebBrowser SetVisibility not working on Android & iOS

UE - Platform - Mobile - May 29, 2018

SetVisibility not working with Web Browser Widget on mobile devices ...

Cannot load youtube URLs on Android

UE - Platform - Mobile - May 29, 2018

UMG Webrowser widget does not display embedded youtube videos. ...

UUserWidget::NativeDestruct may be called on a preview widget if PIE is started while the widget needs compilation

UE - Editor - UI Systems - Jun 4, 2018

By starting PIE while an uncompiled widget is open in the widget editor, it's possible to trigger a call to NativeDestruct on the preview widget. This is especially dangerous because NativeConstruct ...

Cannot access properties of the FAppleARKitFrame struct from within a Blueprint

UE - Platform - XR - Jun 8, 2018

It is not possible to access properties of the {FAppleARKitFrame}} struct within a Blueprint. The struct itself is exposed as a BlueprintType, but none of its properties are also exposed. ...

The order of Actors assigned to a Physics Constraint affects the simulation

UE - Simulation - Physics - Jun 8, 2018

The order in which actors are listed on a physics constraint affects the physics simulation. This should not make any difference in how the physics are simulated. Regression?: No This occurred in ...

Crashes Caused by Deinitialization of Variables with Specific Names

UE - Gameplay - Components - Jun 14, 2018

I was able to repro the crash in 4.19. Unable to open sample project in 4.20 or 4.21. Per Licensee: While porting one of our classes from using UMaterialBillboardComponent to a hand rolled Billboar ...

Migrating assets to a plugin causes references to break

UE - Editor - Content Pipeline - Content Browser - Jun 14, 2018

The migrate function is meant for moving assets from one content folder to another, so it does no actual modification of the references in the migrated assets. This is normally fine, since we expect ...

Renaming parent invalidates childs hierarchy

UE - Gameplay - Components - Jun 22, 2018

When renaming the Parent of a Child Blueprint it invalidates the hierarchy of the Child Blueprint and nests its components under the DefaultSceneRoot. This bug was reported in 4.19.2 (CL-4033788) a ...

Add multiple interface support to the multicast API of FSocket

UE - Networking - Jun 20, 2018

The calls to JoinMulticastGroup and LeaveMulticastGroup on FSocket do not allow for the interface address to be passed in, only the the group address. The interface address is currently hard-coded ...

Crash in packaged game if Blueprint that contains an instanced subcomponent is nativized

UE - Gameplay - Blueprint - Jun 26, 2018

Attempting to load a nativized blueprint whose parent contains an instanced subcomponent causes the editor to crash in a packaged build. Regression?: Yes This did not occur in 4.18 ...