Unreal Engine Issues

Orientation Warping breaks incoming poses where bones are in component space

The orientation warping node breaks incoming poses where bones are already in component space. This is because, in EvaluateSkeletalControl_AnyThread, we are repeatedly setting bone transforms direc ...

Crash after generating HLODs for merged meshes that have all triangles culled

Crash after adding an AI Perception component to a parent and child character

Crash after adding an AI Perception component to a parent and child character. First they both must have had AI Perception components > Compiled and saved > Then both AI Perception components delete ...

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

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 ...

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 ...

Crash upon opening a level that is parented to a Custom Level Script

The attached project will crash whenever attempting to load the default map which is parented to a custom level script made by the user. Note: This issue doesn't occur for all maps in the project. ...

[CrashReport] Crash related to looped Reroute nodes

This is a common crash affecting users in 4.15 and 4.16. User DescriptionsI connected two reroute nodes together in a circle. And well it brought me here.I connected a reroute node with a reroutnod ...

HotReload fails with Linker errors when using Visual Studio 2017

I had a tester with VS 2015 run through the steps I failed with, and they were unable to repro. JamesF was able to repro the issue on VS 2017. JamesF pointed out that this does not occur is you cho ...

EDITOR: LIVE: CRASH: Reroute nodes can cause a loop that freezes the editor.

Branch Build Label UE4-Main Promoted-CL-2230001 DESCRIPTION: If reroute nodes are used to make a loop, the editor will not catch it and the loop will freeze the editor. ADDITIONAL NOTES: Creatin ...

[CrashReport] UE4Editor_Cascade!FCascadeEdPreviewViewportClient::GetCascade() [cascadepreviewviewportclient.h:72]

This is a common crash affecting users in 4.16. It appears to be a continuation of [Link Removed]. Users have not provided additional information about this crash. Source Context/** Accessors */ ...