Mobile Preview dynamic shadows not showing on Mac

UE - Platform - Apple - Dec 19, 2014

When Using mobile preview in the 4.7 preview build, or in the changelist provided, Dyanmic lighting is not showing shadows when changed to movable. Following the steps below, you will see no shado ...

Android Back Button go to Oculus home when using Gear VR

UE - Platform - XR - Mar 7, 2016

This is regression from 4.10 functionality. When assigning the Android Back Button functionality in a GearVR project, the back button will now bring up the Oculus Home Screen asking if you would lik ...

Removing BlueprintReadWrite from a UPROPERTY declaration doesn't make existing nodes invalid

UE - Gameplay - Blueprint Compiler - Sep 11, 2015

Blueprint nodes that exist as a result of the UPROPERTY() macro don't get disabled once the "BlueprintReadWrite" or "BlueprintReadOnly" is removed as a parameter in the UPROPERTY() macro. The nodes ...

SceneCaptureComponent2D destroys shared Lumen Radiosity atlases every frame, breaking temporal accumulation in the main view

UE - Rendering - Features - Lumen - Sep 14, 2026

A USceneCaptureComponent2D with bCaptureEveryFrame = true and default post process settings causes FLumenSceneData::IndirectLightingAtlas and RadiosityNumFramesAccumulatedAtlas on the sharedScene->D ...

There is a possible code mistake in UPrimitiveComponent::GetCollisionShape.

UE - Gameplay - Oct 21, 2015

A user pointed out a possible mistake in the Engine source code. In the GetCollisionShape function in the UPrimitiveComponent class, an FVector variable Extent is created and set, and then potential ...

Child actor passes a string to it's parent's overloaded constructor the incorrect string is received

UE - Gameplay - Sep 24, 2019

When a child actor passes a string to it's parent's overloaded constructor using an overridden function that returns a string it won't receive the correct string. I have verified that the correct fu ...

Compile error when Blueprint Interface returns a map type variable

UE - Gameplay - Blueprint - Feb 26, 2019

A Blueprint Interface function that returns a map type variable will fail compiling with various errors when called in another Blueprint. If the same function is setup in the Actor Blueprint instead ...

Overridden Lightmap Resolution in Sample Projects are too high

Docs - Samples - May 11, 2015

Starting with 4.7 and when we changed the BSP blocks in Sample Content to Static Meshes, a significant minority of lower end PC users are getting soft crashes (freezes and rebooting required to cont ...

Foliage LODs do not appear to use the base LODs lightmap any longer

UE - World Creation - Worldbuilding Tools - Foliage - Dec 16, 2016

LODs used with the Foliage Tool are no longer being shadowed accordingly with their baked lighting from their base LOD. Originally they would stay consistently lit, where as now the lower LOD transi ...

AutoCreateRefTerm does not provide a way to specify that a TArray property within a struct should have a default value created for it if none is provided

UE - Gameplay - Feb 9, 2018

The current implementation of AutoCreateRefTerm does not allow for a default value to be automatically created for a TArray contained within a struct that is passed into a function as a parameter. I ...