Unreal Engine Issues

Unexpected Specular Highlights using Area Lights on Surfaces with strong Normals at Low Glancing Angles

A licensee is reporting shimmering specular highlights on the surface of a mesh with an Area Light while using MSAA, FXAA, or no AA settings. This occurs in the Forward and Deferred Renderer. It wa ...

Unloading a level instance by data layer creates empty folders in the top level of the outliner

ContentExamples: Animation Stand 1.10 after unpossessing character the camera spawns too low causing a pop when moving again

Occurring on all native platforms. ...

The "Project World location to Widget position" node does not return the correct screen position unless the widget's anchor point is set to the top left

When using a widget that has an anchor point that is not set to the upper left the "Project world location to widget position" node does not return the expected location on screen. ...

Investigate Tessellation Performance on Landscape

I have been seeing a few answerhub threads about very low performance on tessellation with landscape. What is puzzling is that it does not seem to change performance whether low or high tessellatio ...

Material expression If node has been broken, major regression that shipped in 4.6

This sounds legit. Anyone mess with the if node recently? There seems to be a regression where existing content is broken. This should be fixed ASAP and patched into 4.6. https://forums.unrealen ...

Sequencer - When a subsection has negative play rate, any nested sub-subsections fail to evaluate

Consider a sequence hierarchy with more than two layers. If the top-level sequence uses a negative timescale on a sub-sequence, the contents inside it animate as expected, but any nested sub-sequenc ...

FOnlineExternalUISteam::ShowWebURL doesn't react correctly to URLs with http:// as the protocol

Code for this function below:bool FOnlineExternalUISteam::ShowWebURL(const FString& WebURL) { if (!WebURL.StartsWith(TEXT("https://"))) { SteamFriends()->ActivateGameOverlayT ...

Vive: Trigger haptic has a low chance to not play

Occasionally the haptics will not response to a trigger pull on the vive wands. It's about 2/15 will skip response. ...

Stereo off while prox sensor uncovered causes low framerate

Inputting 'Stereo Off' while the prox sensor is uncovered will disable stereo rendering but introduces large performance decrease. Stat FPS returns constant 10 FPS / 100 ms. Found on: //UE4/Release ...