Unreal Engine Issues

Rigidbody not moving when small force is applied, and only rotates when angular impulse ≥ 7

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

ISM + WPO = broken motion vectors?

Instanced Static Meshes will have incorrect velocity if a Material uses World Position Offset. Fixed WPO in a material causes significant velocity on the ISM. This was also replicated in //UE5/Rele ...

Toggling a Spline component from an open/closed loop through bp's isn't reflected

Toggling a Spline component from an open/closed loop through bp's isn't reflected ...

Light Function and World Position in 5.4

When rendering a Light Function into the Translucency Lighting Volume, the World Position Material Expression returns the position relative to the Camera (unrotated), not the World. This can be mor ...

Groom Hair Visual Issue with RBF Interpolation Enabled

When "RBF Interpolation" is enabled in the Groom settings, applying an Animation Sequence to a Skeletal Mesh that animates at a position far from the world origin causes the bound Groom shape to bec ...

Default value propagation of instance subobjects doesn't work consistently

Event Dispatcher not being called in 4.6

ED nodes in 4.6 but are not being executed in standalone or cooked games. Also, users receive compile errors when the project is saved and reopened that resolve when the blueprint is recompiled. ...

The Command and Control keys are swapped for Input nodes on Mac

Mac only. The Command and Control keys are swapped for Input nodes. Pressing the Left Command key triggers Left Ctrl, pressing Left Control triggers Left Cmd, and pressing Right Command triggers R ...

Crash in Standalone when using a Blueprint Library Function inside a Macro from a Macro Library

Using a Function from a Blueprint Library inside a Macro from a Macro Library will cause a crash when using Standalone Game for PIE. The same setup will function as expected when Playing in Selected ...

ChildActor Component with physics spawns at the wrong location

ChildActor Component spawns at the wrong location as long as the actor that the ChildActor is referencing has the StaticMesh set as the root and simulating physics. User Description: Basically I h ...