Deactivate Then Activate Ribbon Emitter Causes Flicker

UE - Graphics Features - Oct 21, 2016

When setting a particle system to be active after deactivating the remaining particles still floating in the air from earlier will flicker. This is harder to reproduce when smooth frame rate is enab ...

UPROPERTY variables show in all components of Blueprint instead of just the Actor they belong to

UE - Gameplay - Blueprint - Oct 21, 2016

Variables declared with UPROPERTY( ) are shown in all components in Blueprint components tab. ...

Significant frame drop while blueprint nodes are being rendered on other monitor.

UE - Editor - UI Systems - Slate - Oct 21, 2016

The nodes in the blueprint editor require a lot of resources to render, causing framerate issues whenever they're being shown. The more that are shown, the worse the framerate issues. While a framer ...

Disable Actor Hidden In Game Property Does Not Propagate To Child Particle System

UE - Graphics Features - Oct 21, 2016

If you check "actor hidden in game" in the details panel and then set that value to false durring runtime, any particle system component attached to that actor will remain hidden. ...

Rotation rate is X and Z are flipped when using UDK Remote compared to on the device

UE - Platform - Mobile - Oct 20, 2016

The X and Z rotation axis coming from Rotation Rate swap when being tested with UDK Remote and when the application is on the device. ...

Instanced Stereo enabled makes Material Billboard Components only Rendering in One Eye for Vive

UE - Platform - XR - Oct 20, 2016

Material Billboard components are only rendering in one eye with the 'Instanced Stereo' setting enabled in the Project Settings > Rendering menu. If instanced stereo is disabled, it renders as expe ...

Nodes impacted by code changes do not generate warnings after HotReload

UE - Gameplay - Blueprint - Oct 20, 2016

I noticed this while executing https://jira.it.epicgames.net/browse/UEQATC-1441. At step 10, there should be warnings on the nodes that were updated by the HotReload. This is a regression from 4.13 ...

Use Viewport's BackBuffer as Pixel Shader's input texture fails on Android

UE - Platform - Mobile - Oct 20, 2016

UDK Link: link title In this project, they need to get the BackBuffer(including UMG), and use this BackBuffer to do some post-processing. So follow the code in FViewportSurfaceReader :: ResolveRende ...

Blueprint Editor Layout is not properly saving

UE - Gameplay - Blueprint Editor - Oct 19, 2016

There are some weird things happening with layout recently, like UE-37541 which doesn't allow the user to save their layout, then reset it to the saved layout. Interesting thing to note is that wh ...

Widget Component Does Not Cast Shadows From Certain Lights

UE - Editor - UI Systems - Oct 19, 2016

The widget component acts differently under different lighting types. For example it will cast a shadow if being lit by a directional light but won't otherwise. It also seems point lights affect t ...