Disconnecting root node in behavior tree editor has no effect

UE - AI - BehaviorTree - Aug 27, 2020

I was testing some behavior tree content and wanted to temporarily disable a behavior tree entirely. So, I disconnected the root node from the selector node below it and expected that to disable the ...

Niagara Parameter Collection Overrides aren't working

UE - Niagara - Aug 20, 2020

Parameter collection overrides defined in the Niagara system's System Properties do not work. In FNiagaraSystemSimulation::GetParameterCollectionInstance the return value of GetParameterCollectionO ...

SampleCurve And SampleColorCurve Nodes Missing In Niagara Module Scripts

UE - Niagara - Mar 19, 2020

In a Niagara Module Script the "Sample Curve" and "Sample Color Curve" nodes cannot be found. They were findable in 4.24 prior to 4.24.3. This seems related to this ticket. Found in 4.24.3 CL#11590 ...

Mac - Media Player - Web Cam not accessible

Media Framework - Jan 20, 2020

Audio/Video Devices are no longer accessible via Media Player on Mac. User info: "We think it is connected to camera and microphone privacy. We have got a crash trying to access to camera from cust ...

VR Template Project Doesn't Create SteamVRBindings Config Folder

UE - Platform - XR - Jan 8, 2020

When creating a basic VR Template project, setting the default map to Motion Controller map and exporting a Win64 build their is no SteamVRBindings config folder. I tested this with a Vive Pro and ...

Override Animation Data doesn't use new animation

UE - Anim - Rigging - Nov 20, 2019

Override Animation Data doesn't use the new animation to play when the animation mode is already 'Use Animation Asset' ...

Calling GEngine->Browse from an RPC implementation causes a crash

UE - Networking - Nov 5, 2019

The engine is not resilient to calling Browse from within an RPC implementation, and likely not resilient to other ways of destroying the net driver within RPCs/OnReps. It's not something we need to ...

Shared Transitions are not usable by separate state machines within the same ABP

UE - Anim - Runtime - Anim Blueprints - Oct 18, 2019

Shared transition rules/crossfades are not usable by other state machines within the same ABP. Copy/Pasting these transitions to a new machine, create new independent shared transitions of the same ...

FSkeletalMeshMerge::MergeSkeleton calls BuildSockets before RefSkeleton is assigned

UE - Anim - Runtime - Aug 9, 2019

Before assigning RefSkeleton, FSkeletalMeshMerge::MergeSkeleton calls BuildSockets->RebuildSocketMap->FSocketInfo->RefSkeleton.FindBoneIndex, which incorrectly sets the SocketBoneIndex. ...

Renaming a Named slot widget appears to clear any children in all other widgets that the named slot is used

UE - Editor - UI Systems - Aug 9, 2019

When changing the name of a named slot widget, it appear that any children contained in the the named slot (when the widget has been added to other widgets) will be cleared ...