Unreal Engine Issues

Auto-Save failing, pulling old saves and blocks users from continuing

Reporting an issue where are users are getting prompted to auto-save, but then it appears to fail and asks them to manually save. They're being prompted with outdated save files, but get stuck in a ...

nDisplay - Projection policy warp files are using an absolute path rather than a project relative path

MaterialProxyReplace node does not work with Approximate setting in HLOD generation or Actor Merge

This is the same behavior for HLOD generation of World Partition. Replace is useful when there is a material that changes parameters with information such as camera. ...

Use a shared context in Loading instead of copying the LinkerInstancingContext

Current LinkerInstancingContext are copying instead of being shared internally during loading which can induce a lot of memory usage when used with World Partition which can contains a lot of mappin ...

Check in UCharacterMovementComponent::SmoothClientPosition fails when travelling between servers

While attempting to connect and travel to a new server, the client's NetDriver will be shutdown, and a new pending net driver created (in UEngine::Browse). When the original NetDriver is destroyed, ...

Suspend/resume iOS Metal Crash on low end device with MTLCommandBufferErrorMemoryless error with lots of geometry

The project was built in Unreal 4.27.2 binary from the Epic Games Launcher. At this stage we have only observed the crash on devices with a hardware combination of Apple A9 1.8 GHz and 2GB of Memory ...

Variant Thumbnails are washed out

I think somewhere in Thumbnail Generator::Generate Thumbnail FromTexture() is applying this washout. ...

Reimporting static mesh doesn't respect changed lightmap settings

Licensee reports change of behaviour between UE4 and UE5 when reimporting a mesh after changing its lightmap build settings. Change of behaviour occurred in 17404767, which was to fix a similar pro ...

To Front control on Sequencer in Multi User editor will not pause playback

This may be specific to how the media playback is handling playback. [Link Removed] ...

Slower physics simulation when bSubStepping and bTickPhysicsAsync are enabled

When both Substepping and Tick Physics Async are enabled, there appears to be an inconsistency between the part of the physics simulation that calculates the number of steps and the part that calcul ...