Reference to control rig can be lost on actors with multiple skeletal mesh components

UE - Anim - Rigging - Control Rig - Apr 4, 2023

In the attached project, when we initially add a control rig track for the actor with multiple skeletal mesh components, we add the control rig for the correct component because FControlRigParameter ...

Math expression nodes should use CommutativeAssociativeBinaryOperator when applicable

UE - Framework - Blueprint Compiler - Mar 27, 2023

Read-only nodes used in math expression should use CommutativeAssociativeBinaryOperator when appropriate. Even though these nodes can't be modified, there is the occasional need to copy these nodes ...

OSS Null won't find multiple LAN sessions hosted by a single instance

UE - Online - Feb 22, 2023

This happens because of how FLANSession::Tick will handle receiving multiple response packets from a single host. FLANSession will cache the ResponseGuids of any incoming host response packets, so i ...

AnimDrawDebug does not work if using RootMotion from Everything

UE - Anim - Gameplay - Feb 14, 2023

Debug drawing with AnimDarwDebug~ does not work when RootMotionMode is set to "RootMotion from Everything". In addition, the same issue occurs when MultiThread of Animation is turned off. Licensee ...

Build geometry removes spline component visibility

UE - Framework - Components - Jan 23, 2023

A spline component will become invisible after building geometry with the spline actor in the level. This issue is occurring in //UE5/Release-5.1 @ Binary CL 23058290 This issue is NOT occurring ...

Navmesh rebuild always occurs on Startup map immediately after starting editor

UE - AI - Navigation - Nov 22, 2022

Whenever launching the UE5 Editor, it rebuilds the navmesh on the first map it opens. Reopening the same map again will not cause the navmesh to be rebuilt. It seems that the first time the map is o ...

[MetaSounds] - Changing Metasound Source's Input Name Resets Preset's Inputs

UE - Audio - MetaSounds - Nov 15, 2022

Reproduced 3/3 times. Issue also occurs in //UE5/Release-5.0 - CL 20979098 Binary. Confirmed NOT a Regression. ...

Linked Anim Graph in Post Process Anim BP does NOT work after remove ControlRig Track

UE - Anim - Rigging - Control Rig - Oct 11, 2022

After remove control rig track from the skeletal mesh, Linked Anim Graph in Post Process Anim BP of the SK Mesh does NOT work. This issue can be fixed by the following code.// add #include "Anima ...

Undoing parent deletion creates duplicate child actors

UE - Framework - Blueprint - Jul 29, 2022

Undoing the deletion of an actor with a child actor component added via the details panel (IWCE) duplicates the child actor and the hierarchy is incorrect in the scene outliner. This seems to only h ...