Unreal Engine Issues
Unreal Engine Issues
Ongoing D3D 'HUNG' crash - FD3D11Viewport::PresentChecked()
UE - Graphics Features - Jan 18, 2017This is a new ticket for the D3D 'HUNG' crash originally reported in [Link Removed]. Some fixes were introduced in 4.14.2 that decreased the occurrences of this crash, but other cases are still ongo ...
FHLSLMaterialTranslator::GetMaterialEnvironment can crash or not load UMaterialParameterCollections
UE - Rendering Architecture - Materials - Apr 30, 2025In UE 5.5, the Editor may crash in FHLSLMaterialTranslator::GetMaterialEnvironment when loading materials with Material Parameter Collections, likely due to async loading. Calling ParameterCollectio ...
Lyra 5.5 - LAS_ShooterGame_SharedInput has got a missing reference on InputMapping #1
UE - Gameplay - Input - Jan 27, 2025The templated Lyra project for 5.5 is missing a reference to IMC_Default_KBM on /ShooterCore/Experiences/LAS_ShooterGame_SharedInput because it looks like IMC_Default_KBM was renamed to IMC_Default. ...
Screen Space Ambient Occlusion Artifacts
Docs - Samples - Apr 3, 2015Flickering occurs when using the Post Process Ambient Occlusion (Screen Space AO). This is more noticeable when using stronger values entered into the AO fields. I checked these settings in both 4 ...
Project debug symbols are no longer included in crash reporter callstacks.
UE - Foundation - Core - Jun 15, 2015Project debug symbols are not appearing in crash reports in 4.8. In 4.7.6, these symbols would be included in the crash reports, but in 4.8 these lines have no information other than the project nam ...
GoogleARCoreJavaHelper functions are not correctly exported publicly
UE - Platform - XR - Oct 31, 2018The jni functions in GoogleARCoreAndroidHelper.cpp are not correctly exported, when we tried to build a Test project it failed with this exception: java.lang.UnsatisfiedLinkError: No implementatio ...
BuildGraph XML Errors Logged Incorrectly
UE - Foundation - Horde - BuildGraph - Aug 30, 2019Suggested fix from licensee: After investigation, it seems that the filename is passed as a string instead of a FileReference in Script.cs:84. Fixing the issue seems to be as simple as changing th ...
Cloth jitters in Movie Render Queue renders when temporal sampling is enabled
UE - Anim - Sequencer - MRQ - Dec 6, 2022The Cloth simulation time step smoothing is interfering with the substepping fix for multi Temporal Samples by changing the very variable DeltaTime and causing some large errors in the cloth simulat ...
Error: CDO Constructor (DeprecatedGearVRControllerComponent): Failed to find /OculusVR/Meshes/GearVRController message launching onto Android from Mac
UE - Platform - XR - Jul 12, 2017Only occurs launching onto device from Mac. Did not occur from windows. Error message is displayed on android device when launching QAGame QAEntry on to it:Error: CDO Constructor (DeprecatedGearVRC ...
Blueprints with inherited Macros cannot save
UE - Gameplay - Blueprint - Feb 27, 2015Blueprints with inherited Macros cannot save. Reproduced in 4.7.1 binary and Main (//depot/UE4/Promotable-CL-2455917) ...