Unreal Engine Issues
Unreal Engine Issues
Implied Decal Blend Modes don't account for static ignore-switch parameters in an expected way
UE - Rendering - Architecture - Sep 28, 2021The desired behavior from a user perspective here is that they'd be able to use Static Switches in a decal master material to toggle different features and behaviors. In the above setup, if I set th ...
Getting Vector Parameter Values from a Dynamic Material Instance with 1 or more vector parameters returns an empty array
UE - Rendering - Architecture - Materials - Jan 3, 2023This is not a regression. Tested in //UE5/Release-5.0 CL20979098 The array for Vector Parameters isn't getting populated when called from a Dynamic Material Instance. ...
ChildActorComponent (SkeletalMesh) goes into tpose when calling SetChildActorClass
OLD - Anim - Mar 19, 2018There is an issue occurring where when updating an animation of a child actor by setting the Child actor class, the animation will flash the skeleton in a T-Pose before continuing with the animation ...
Substrate Unlit editor view mode renders black with Blendable GBuffer
UE - Rendering - Graphics Features - Substrate - Mar 18, 2026When using Substrate materials with SUBSTRATE_GBUFFER_FORMAT==0 (Blendable GBuffer), the Unlit editor view mode renders completely black. TopLayerData.UnlitViewBaseColor is never populated in the bl ...
Sequencer in packaged VR project does not appear to work when using sequence player on begin play
UE - Anim - Sequencer - Sep 27, 2016Sequencer in packaged VR project does not appear to work when using sequence player on begin play. The HMD no longer appears to be affected by sequencer after the project has been packaged out ...
Geometry Material Alignment not functioning in 4.8
Tools - Jun 15, 2015Material Alignment on BSPs are not functioning in 4.8.0 Release. This is a regression from 4.7.6. The issue does appear to be fixed and functional in 4.9 (Promotable-CL-2581018) ...
Camera Shake Oscillation Duration no longer accepts -1 as indefinite
UE - Gameplay - Jul 30, 2015The Camera Shake Class no longer allows for indefinite shaking via setting a negative value in the Oscillation duration, per the tooltip instructions. This happens when using either the Play World ...
Atmospheric Fog actor creates a black ring on the horizon
UE - Graphics Features - May 16, 2016When using the Atmospheric Fog actor, a black ring can be seen on the horizon. This can be seen by simply placing the Atmospheric Fog into an empty level. The issue cannot be seen if there is a sky ...
Foliage is Offset When Streaming Existing Levels From World Composition
UE - World Creation - Worldbuilding Tools - Foliage - Jul 3, 2018Streaming an existing level that used World Composition places the landscapes in the correct spot, but any foliage tied to that landscape is placed on the landscape tile at 0,0 instead of its corres ...
Cloud Presenter - Presentations with phasing may display all phases at once immediately after launch
TM - Tools - Oct 11, 2024Some Presentations containing Phasing will display all phases simultaneously in the Twinmotion Cloud after the Presentation is launched. Issue is consistently reproducible for affected Presentati ...