Handheld AR On IPad Has Dark Contrast Issues And Constant Screen Tearing When Mobile HDR Is Disabled

UE - Platform - XR - Mar 4, 2020

When MobileHDR is disabled in a packaged AR project for iOS there is a big constrast with the brightness in the image and constant screen tearing. This is happening specifically with images captured ...

Incorrect conversion when using FUnitConversion::Convert

UE - Foundation - Core - Jun 5, 2020

Incorrect conversions values received and using FUnitConversion::Conversion ...

Crash after setting material of Text Render actor to an instance of the default material

UE - Graphics Features - Jul 15, 2020

Setting the material of Text Render to an instance of the default material then running as in Standalone results in a crash. ...

Static lighting isn't bouncing when using Layered Materials

UE - Graphics Features - Lumen - Aug 13, 2020

Static lighting will not bounce on the ceiling when using a Layered Material. The Material Attributes Layers node is used which doesn't appear in 4.24.3 so this isn't a regression. This was report ...

Max Depenetration Velocity cannot be set to zero after setting it to a non-zero value

UE - Runtime - Simulation - Mar 1, 2021

It seems that when setting the Max Depenetration Velocity to a non-zero value, you are then unable to set it back to 0. Tested in //UE4/Release-4.25 @ CL 14469661 and this did not occur so marking ...

Custom Primitive Data are not (fully) functional with Instanced Static Mesh components

UE - Graphics Features - Mar 29, 2022

If the ISM component is not in a blueprint, but added directly inside the level, the CPD works. If the CPD value is set from a construction script through either the Default or Transient function, i ...

CachedMaxDrawDistance value are not updated by CullDistanceVolume in persistent Level

UE - World Creation - Worldbuilding Tools - World Composition - Dec 16, 2022

in PIE, RerunConstructionScript() is executed and actor's CachedMaxDrawDistance is updated as expected. in packaged game, RerunConstructionScript() is not executed  so, CullDistanceVolume is not u ...

Infinite loop in UAnimSequence::ExtractRootMotion when sampling backwards

UE - Characters - Animation - Dec 6, 2021

When sampling root motion backwards we can hit an infinite loop in ExtractRootMotion. This happens if the initial sample time + negative delta is off the end of the animation clip. In that case FA ...

Metahuman Hair Physics becomes jittery when 32x Antialiasing is enabled in MRQ

UE - CAPT - Color Pipeline and Rendering - MRQ - Aug 15, 2023

Enabling 32x AntiAliasing on an MRQ causes metahuman hair physics to become twitchy in the image sequence output.  ...

UE5.4 Regression - crash when disabling shader optimization while raytracing is enabled on D3D12

UE - Rendering - Architecture - Shaders - Jul 15, 2024

Certain interactions between a Rect Light with a Light Function and a Post-Process volume lead to a check() when compiling a Ray Tracing PSO for tracing lights. This check() only happens when shader ...