Unreal Engine Issues
Unreal Engine Issues
Niagara - When Interpolated Spawning is disabled, the first frame of each particle unexpectedly does not take into account the Particle Update stage
UE - Niagara - Feb 28, 2025Foreword: 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.
UE - Platform - Mobile - Jan 16, 2017This was discovered during the 4.15 mobile compat. ...
Slate UI asset colors washed out on iOS
UE - Platform - Mobile - Feb 24, 2017UI 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
UE - Graphics Features - Feb 10, 2020See https://udn.unrealengine.com/questions/553031/volumetric-fog-bug.html?childToView=554676#answer-554676 ...
Material Emissive Color not working with SkyAtmosphereIlluminance Material Expression
UE - Graphics Features - Jan 9, 2025A 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
UE - Platform - Mobile - May 28, 2015When 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 ...
Change background color/tooltip of behavior tree's root level decorators
UE - AI - Dec 1, 2015Users 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 ...
Material Editor: Material Expression Constant Node Preview Incorrect Color
UE - Rendering Architecture - Materials - Jun 4, 2020Users can create multiple tracks for the same parameter in sequencer
UE - Anim - Sequencer - Oct 25, 2016Users can create multiple tracks for the same parameter in sequencer. In the case of changing a spotlight color the change in color results in a new track being created ...
Landscape Spline meshes lose vertex color paint after moving to another level
UE - Graphics Tools - Terrain - Landscape - May 11, 2018UDN: https://udn.unrealengine.com/questions/432735/%E5%9C%A8%E6%B5%81%E5%85%B3%E5%8D%A1%E4%B8%AD%E6%8F%8F%E7%94%BB%E6%A0%B7%E6%9D%A1%E6%9B%B2%E7%BA%BF%E4%B9%8B%E5%90%8E%E5%A6%82%E6%9E%9C%E6%8A%8A%E ...