Unreal Engine Issues

SkelMeshMerge not working for meshes with >1 LOD

Reported on UDN (see Additional Info URL). Looking at code, we call USkeletalMesh::AllocateResourceForRendering for every LOD, but we should only call it once. Need to check if our SkelMeshMerge t ...

Actor Enable Collision does not affect ISM

The problem was reported via UE Bug Submission. I was able to repro with their provided test project. ...

Scene Capture Cube not affected by bloom

SplineComponent - setting roll affects tangents

Licensee reports issue with setting roll on a spline component control point. ...

Synthetic benchmark is affected by Scalability Settings

Sumo Digital Ltd. has reported that the synthetic benchmark has skewed GPUIndex scores when changing graphics scalability settings (i.e. r.LumenScreenProbeGather.DownsampleFactor). They are currentl ...

Morph Target Preview Slider Defaults to One When Entered Value is Larger Than One

When morph target weight value is set to a number other than 1 the slider sets it back to being a value under 1. It does not go down from the number that it was set to but instead defaults to being ...

Having a project for iOS set to only allow Landscape Right with show incorrectly on an iOS device

When you are packaging and deploying your project to an iOS device, If Supports Landscape Right orientation is the only Orientation checked, It will show incorrectly on the iOS device. Tested on an ...

When PCH is Disabled, Error Occurs in VulkanGenericPlatform.h at Android Build

If disable PCH in Target.cs, an error will occur when building for Android. The log is as follows. LogPlayLevel: Error: D:/Build/Release-4_21_0/Engine/Source/Runtime/VulkanRHI/Private/Android/../Vu ...

Crash when upgrading Nvidia GFX driver from Version 457.85 with open Project

Repro Rate: 5/5 Summary: When opening a Project in UE version 5.1.0 with Nvidia GFX driver version ###, the user is notified that there are known issues with this driver through a pop-up:WARNING: K ...

Conflict between sequencer transform track and Parent Constraint from the Animation Mode breaks temporary pivot translation on any actor

Note: This affects all versions from at least UE 5.3, including mainline latest. The "Animation" Editor Mode allows creating constraints for level actors. One of these, the "Parent" constraint, con ...