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 ...

Source assumes that TG_PrePhysics is the first tick group

UE - Gameplay - Feb 16, 2016

Licensee has reported an issue with the source code and proposed a fix. The issue is that the source is assuming that TG_PrePhysics is the first tick group in all cases. Information can be found abo ...

Movable Skylight with DFAO creates Dark Areas when Combined with Reflective Material

UE - Graphics Features - Jun 9, 2016

A user on the AnswerHub pointed out that his reflections when using a Movable Skylight with Distance Field Ambient Occlusion produces black results when combined with a reflective material. I trace ...

Clicking a button in UMG stops all tilt information

UE - Editor - UI Systems - Nov 14, 2014

Tilt information is no longer taken after clicking on a button in UMG. The tilt information goes to all zeros. That is until the user clicks else where at which point the device will then start regi ...

Scaling problems when using "Keep World Position" attachments

UE - Gameplay - Jun 4, 2015

When using the "Keep World Position" attachment type, the child mesh does not scale properly with the parent. X scales normally, but Y and Z seem to be swapped. [Image Removed] The name "Keep Wor ...

Changing variable defaults in parent BP does not update changes in child

UE - Gameplay - Blueprint - Dec 9, 2014

The changes made to the values for a transform variable setup in a blueprint will not show up in a child BP until the yellow arrows is pressed to reset to default. Other variable types update autom ...

Painted Landscapes have blacked out sections when deployed to a mobile device

UE - LD & Modeling - Terrain - Landscape - Mar 24, 2015

If a user uses a multi layered material to pain a landscape and then deploys this project to an iPhone 6 plus our an Android Samsung Galaxy Note3 (SM-N9005) parts of the landscape will appear to be ...

Default values resetting for level instances of custom component pointers

UE - Gameplay - Components - Feb 3, 2017

When a code component contains a pointer to an actor, adding the component to a blueprint and setting the pointer to point to an instance of the same blueprint will cause the pointer to reset to "No ...

RebuildRenderData is still not safe during cook time

UE - Gameplay - Paper2D - Apr 21, 2015

https://answers.unrealengine.com/questions/215370/some-sprites-tiling-into-tiny-grid-in-packaged-ver.html UTexture2D::ConditionalPostLoad doesn't wait for the render data to finish caching outside ...

Dialog Windows Still Displayed when Editor is Minimized on Macs

UE - Platform - Apple - Jun 25, 2015

There are some dialog windows that will render on top of other external applications when the editor is minimized and does not have focus.....i.e. 'Building Lighting' and 'Auto-Save' dialog windows. ...