Crash when calling UPoseableMeshComponent::CopyPoseFromSkeletalComponent() from Actor's Tick while unregistering

UE - Anim - Runtime - Apr 26, 2023

Under certain conditions, it appears that the function UPoseableMeshComponent::CopyPoseFromSkeletalComponent may crash because the BoneSpaceTransforms obtained from the source component are empty, p ...

Orientation Warping is rotating the mesh incorrectly on listen servers

UE - Anim - Gameplay - Apr 26, 2023

See UDN for details: [Link Removed] ...

RPCs can still be called on torn off actors

UE - Networking - Apr 25, 2023

Because UNetDriver::ProcessRemoteFunction does not check if the actor has been torn off, it's possible for the server to send a RPC for a torn off actor if it still exists on the server and client. ...

Crash occurs while playing in editor with a State Tree using Bool Compare for a transition state to a child state.

UE - AI - StateTree - Apr 25, 2023

This is a regression. Tested in //UE5/Release-5.1 CL2390901 The crash occurred 3/5 times. Crash occurs while playing in editor with a State Tree using Bool Compare for a transition state to a child ...

ULoadingScreenManager::ShowLoadingScreen() causes a nested UWorld::Tick() that leads to a crash when using CommonLoadingScreen in Lyra.

UE - Content - Sample - Apr 24, 2023

Encountering a crash in Lyra when you hit PIE if you have an animation montage document open with an animation segment selected and the preview scene visible in the animation segment details panel. ...

Snap Object to View Doesn't Update Pivot

UE - Editor - Workflow Systems - Apr 24, 2023

When you select an object in the viewport and use "Snap Object to View", the editor pivot (e.g. the location of the transform widget) doesn't change. It stays where the object used to be until you c ...

AActor::CheckActorComponents has misleading warning

UE - Gameplay - Components - Apr 24, 2023

There's actually two issues going on here: 1. The REINST references are incorrect, and due to [Link Removed]. 2. Blueprint created components will always have different names between the instance ...

Submix Settings on Submix Send Settings cannot be updated at runtime in SubmixSendVolumeComponent

UE - Audio - Apr 24, 2023

Source: UDN ticket Stepping through, when SetSubmixSendSettings() is called on the SubmixSendVolumeComponent, the SubmixSendSettings on the Component initially get changed before the NotifyDataChan ...

Fast Track icon is not displayed when variables is not connected to the AnimGraph

UE - Anim - Runtime - Anim Blueprints - Apr 24, 2023

The Fast Track icon is not displayed when there are no variables connected to the AnimGraph. This issue was not present in UE4. ...

Chaos Cloth Self Collisions Spatial is slow when Tris are much smaller than thickness

UE - Simulation - Physics - Character - Apr 21, 2023

This came via a UDN. Very small triangles can generate very small lods, which make query time really slow if your self collision thickness is significantly larger. You will do X^3 checks per query ...