Unreal Engine Issues

Derived struct data is not copied to Base struct

The actor Blueprint is intentionally causing an object slice to occur. In other words, we're copying a derived type to a base type, so the expectation is that only the inherited base properties are ...

VisionOS deferred renderer regression

Deferred desktop renderer does not function correctly on visionOS.  It did work in 5.4.  One problem is the r.XRMSAAMode setting forcing 4 samples even when not using msaa, but there are other probl ...

[CrashReport] UE4Editor-MetalRHI.dylib!FMetalRenderPipelineDesc::CreatePipelineStateForBoundShaderState()

This Jira was created from CrashReports submitted by the public due to the high number of occurrences. Descriptions from users are provided below. Error message: SEGV_MAPERR at 0x3 Most recent us ...

Adding Instances to a Hierarchical Instanced Static Mesh causes crash

Adding Instances to the Hierarchical Instanced Static Mesh Component on BeginPlay causes the Editor to crash. Tested in 4.19.2 (CL - 4033788), 4.20.1 (CL - 4229980), 4.21(CL - 4235929) ...

Investigate updating the default XInput version to 1.4

Horde server fails to build Docker image

If you attempt to build the Horde server Docker image right now it fails unless you have some of the layers cached or a nuget proxy/cache that has cached some packages. JetBrains have renamed their ...

Rendering glitch when launching on Android

https://answers.unrealengine.com/questions/462957/rendering-glitch-when-launching-on-android-ue413-p.html I was able to repro it on Nexus5 with Android 5.1.1. ...

Lightmass crash after finished building and hitting save

User is reporting that the editor will crash after lightmass has finished building and they click to save the project. ...

ParticlePosition doesn't use Previous values

FHLSLMaterialTranslator::ParticlePosition does not return Previous information when request which can result in bad motion vector calculation. ...

Crash on draw material to rendertarget

This crash has started occurring in 4.15.2. It seems to be a regression from 4.15.1. ...