Unreal Engine Issues

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

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 ...

Editor crash in HairStrandsMeshProjection.cpp when spawning actor with Groom Component bound to skeletal mesh

The editor crashes with an assertion failure when placing a Blueprint actor that contains a Groom Component bound to a MetaHuman skeletal mesh. The crash occurs in AddHairStrandInitMeshSamplesPass d ...

Niagara Regression - Looping particle with Spawn Burst Instantaneous on time 0.0 flickers for a frame between loops

Note: This worked correctly up to UE 5.4, but repros from UE 5.5 up to mainline latest. If a Niagara Emitter is set up with "Spawn Burst Instantaneous" on time 0.0, and the spawned particle(s) have ...

Animation Constraint Jitter in Sequence when Constraining Layered Control Rig node

When using constraints with layered control rigs, you get jitter on the constrained object. ...

Invalid Operand "WorldPartition" when calling FAutomationEditorCommonUtils::CreateNewMap();

LogAutomationController: Error: LogEditCondition: WorldSettings - EditCondition attempted to use an invalid operand "WorldPartition". ...

UnrealMatch3 ensures when launching on iOS

While running regression pass, found that UnrealMatch3 hits an ensure when user selects to Launch on to iOS device. LogOutputDevice:Error: The ini file '../../../UnrealMatch3/Saved/Config/IOS/Device ...

Split screen - Player 2 doesn't receive input when created with Create Local Player node

This is a regression. Tested in //UE5/Release-5.0 CL20979098. Split screen extra controllers ignored when using Create Local Player node. May just be Enhanced Input related. ...

Ensure occurs when RBAN simulated rigid body approaches UseComplexAsSimple mesh

When a collision enabled RBAN node attempts to collect surrounding meshes, if there is a mesh with UseComplexAsSimple, it will hit the Ensure when cloning a mesh on the task graph thread. Disabling ...

Material Editor Crash occurs on mathematical operation node receiving invalid input from a Texture Object

[AI] Crash when gathering heightfield geometry on worker thread

From the body of the ticket: We aim to do as much of the work off the game thread as possible to avoid impacting frame rate. We've recently found a crash during collection of the geometry slices fr ...