Unreal Engine Issues

Post Process volume change Unable to PIE and Crash

There is a compound issue with using the post process volume. Editing the value by using the mouse or dragging on the color wheel does not trigger this issue. Using the keyboard to edit this value c ...

HDR values are not updating in Pixel Inspector

HDR setting in the Pixel Inspector does not update with the color you hover over. The color bar should update similar to Final Color settings and value of Luminance setting should update as well. ...

Niagara - When Interpolated Spawning is disabled, the first frame of each particle unexpectedly does not take into account the Particle Update stage

Foreword: Even if the behavior described here is by design, it is rarely (if ever) expected or desired. This was discussed and agreed to be treated as a bug. Explanation below. When interpolated sp ...

SunTemple is washed out in one color on some Android devices.

This was discovered during the 4.15 mobile compat. ...

Slate UI asset colors washed out on iOS

UI widgets are appearing a much brighter than they should TEST MACHINE SPECS: iPhone 7, iPhone SE, iPad Pro ...

Light shaft smear color due to TAA bleeding

See https://udn.unrealengine.com/questions/553031/volumetric-fog-bug.html?childToView=554676#answer-554676 ...

Material Emissive Color not working with SkyAtmosphereIlluminance Material Expression

A licensee has reported that they are unable to use an emissive material utilizing the SkyAtmosphereLightIlluminance material expression together with Nanite and Lumen. The linked UDN has some more ...

Reflection Vector not translating into ES2 when applied via an Emissive Color

When you have a Reflection Vector plugged into a Cubemap and applied to the Emissive Channel of an Unlit Material, the Cubemap will not render on a mobile device with ES2 or in ES2 (Mobile/HTML) Pre ...

Editor crash on Instanced Subobjects of an outer class in Class Picker

Change background color/tooltip of behavior tree's root level decorators

Users find it confusing when they add decorators on root composite and none of those decorators work. We need to keep them for subtree feature though. And it can result in root-note decorators not ...