Unreal Engine Issues
Unreal Engine Issues
CppCompileWarningSettings.NonInlinedGenCppWarningLevel messages should contain Warning\Error
UE - Foundation - Cpp Tools - UnrealBuildTool - Oct 8, 2025The messages emitted when CppCompileWarningSettings.NonInlinedGenCppWarningLevel is set to Warning\Error should contain the literal so the tools pick them up and react accordingly. From the EPS c ...
Packaging for DLC with plugin multiple times causes failure due to file path length
When the DLC is being built for a project and stored in a plugin, the result is normaly until the DLC is packaged multiple times. This leads to the file path becoming more and more nested each time. ...
Add Submix Effect Blueprint Does Not Have Any Effect
UE - Audio - Dec 11, 2020Adding a second effect to the Submix Effect Chain on a Submix works as expected, but when trying to add a Submix Effect via Blueprint, there is no effect. This also applies to "Add Master Submix Ef ...
A chaos vehicle that moves at very high speeds with CCD enabled on the vehicle sometimes has a collision response that is abnormal where the vehicle loses a significant amount of speed when colliding with dynamic objects configured as One Way Interaction
UE - Simulation - Gameplay - Dec 16, 2025Context: Continuous Collision Detection (CCD) is being used on a Chaos Vehicle to avoid tunneling issues with certain surfaces as it prevents any missed collisions between fast moving particles and ...
Cumulative Patching does not work with Pak signing
UE - Foundation - Feb 20, 2024Cumulative patching is implemented by copying the generated pak files during staging of the base and each patch to the Releases directory. When creating a patch, all of the pak files from the releas ...
SceneTexture:WorldNormal causes decal to ignore Emissive Color
UE - Rendering Architecture - Materials - Mar 11, 2022SceneTexture:WorldNormal causes decal to ignore Emissive Color. ...
Event Dispatcher implementation called several times (number of bound refs increases every compile)
UE - Gameplay - Jun 26, 2018The number of calls to the Event Dispatcher increase each time the blueprint actor containing the reference is compiled. This issue was not present in 4.18.3 (CL-3832480) but is in 4.19.2 (CL-403378 ...
Hot Reload Crash involving variables in USTRUCTs
UE - Foundation - Cpp Tools - Hot Reload - Sep 1, 2016This issue was created for this UDN post: https://udn.unrealengine.com/questions/306933/hotreload-crashbad-behavior-when-addingremoving-pa.html This repro is based off his last repro, cutting it do ...
SceneTexture [SceneDepth] is not displayed correctly in ES3.1Preview
UE - Platform - Mobile - Oct 4, 2019It will be displayed correctly when launched with XperiaXPerformance. ...
Data Layers: GetDataLayerInstanceFromAssetName differs between editor and non-editor
UE - World Creation - Worldbuilding Tools - Data Layers - Apr 9, 2024From licensee: The function AWorldDataLayers::GetDataLayerInstanceFromAssetName() uses different names in #WITH_EDITOR and without editor builds: #WITH_EDITOR config calls DataLayerInstance->GetDa ...