Unreal Engine Issues

Orphaned BP actors when using UWorldPartitionBuilder

From an EPS case: --------------------------------- We're seeing a recurring issue where child BP actors are becoming orphaned during any processing that uses UWorldPartitionBuilder. It affects ...

[AI] Unable to bind to parameter properties when using a Soft Object Reference

Global parameters disappear from the binding list when a soft object reference is present. Pulling up the binding menu shows nothing for Parameters when there are only object references in the ST as ...

Placed render targets are not initialized properly in D3D12

ScreenshotCapturedDelegate is never called in HDR

In UGameViewportClient::ProcessScreenShots, when bHdrEnabled is true, the Bitmap array is never filled (the capture code uses BitmapHDR), so ScreenshotCapturedDelegate is never called for any custom ...

same PhysicsAsset refresh multi times when modify multi SkeletalBodySetup properties in same PhysAsset

USkeletalBodySetup::PostEditChangeProperty will call OwningPhysAsset->RefreshPhysicsAssetChange(), if I modify many SkeletalBodySetup properties in same PhysAsset, will cause call OwningPhysAsset-> ...

UbaAgent in 5.7 depends on qwave.dll, which is not available on Server Core

A licensee runs UbaAgent on Windows Server Core. This worked in 5.5 and 5.6, but broke in 5.7. After some investigation, they found that UbaAgent took a new (hard) dependency on qwave.dll in order ...

Controller Mapping/Unmapping on some platforms is not ideal for local multiplayer

[Link Removed] The workaround is as I posted in the UDN, to override the viewport client or to make a custom slate input mapping to change this behavior. But, there is a bug with that unmapping/l ...

Inline retargeting gives different output pose vs retargeting from mesh

When we perform a retarget from an input pose rather than another mesh, the transforms within the anim bp have already been conformed to the target mesh by translational retargeting and compatible s ...

[AI] SmartObjectPersistentCollection produces errors during Map Validation

SmartObjectPersistentCollection in 5.6 and later now give errors when the map validator runs due to referencing spatially loaded actors. This was working per licensee in 5.5. There was a change from ...

Motion warping doesn't enable if a target is added on frames subsequent to the start of the warp notify

The issue is that URootMotionModifier_Warp::Update will disable the warp if there is no target found for it. But there's no functionality to turn the warp back on if a target is then set on a later ...