Unreal Engine Issues

No warning given when a subobject is registered to a component not using the registered subobjects list

AActor::AddReplicatedSubObject will ensure in this case if the actor doesn't set bReplicateUsingRegisteredSubObjectList, but there is no equivalent check in AActor::AddActorComponentReplicatedSubObj ...

Slow Actor ContainsDataLayer / HasDataLayers

AActor ContainsDataLayer Is Slow: Navigation builds are heavily slowed down by TObjectPtr to TSoftObjectPtr conversions when checking if DataLayerAssets contain Users discovered a huge time los ...

Crash in FNiagaraGPUInstanceCountManager::AddDrawIndirect when Android Vulkan Mobile preview platform is enabled

In the Android Vulkan Mobile preview mode, when multiple GPU niagara systems are visible and the user moves the camera around the level it can cause a crash, potentially caused by a race condition o ...

'prefix parameter names' checkbox in a material function's settings does nothing.

Prefix Parameter Names checkbox does not work as expected, and the Group names are unmodified. The value "UMaterialFunction::bPrefixParameterNames" does not appear to be used anywhere in the Engine ...

GenerateConvexHullFromPoints incorrect results

FGeomTools2D::GenerateConvexHullFromPoints can result in a point cloud that is not convex or doesn't completely cover the full area from the source points. ...

Mobile Deferred Shading enabled and Preview Level Android Vulkan will crash the editor

Windows Game Input - DualSense/DualShock controllers DPad button repeat events behave unexpectedly

Direct Link is not finding source - macOS Sequoia

Direct link with macOS Sequoia seems to be broken as Twinmotion cannot detect the Direct Link source, it seems the data is properly written in the cache directory. ...

GeneratePsyms fails with installed builds due to missing dymp_syms tool and incorrect path space handling

Uncovered while testing [Link Removed] ...

Material attribute layers issue with texture sample and VT lookups

When using material attribute layers in a material layer setup, there is a potential discrepancy in the number of VT Lookups presented in the material instance's Platform Stats. When the same textur ...