Cloth painter hangs while pressing H to preview the masks

Physics - Clothing - Sep 8, 2020

The DerivedDataCache for the whole SkeletalMesh doesn't need to be rebuilt while previewing the mask painting, since it will be rebuilt when exiting the painter anyway.  ...

Parameterized Vector4 is treated as Float3

Rendering - Aug 28, 2020

A Parameterized Vector4 are being treated as Float3. This prevents users from being able to use Vector4s in an If node during runtime. This is seen as far back as //UE4/Release4.22 cl 8065155 so th ...

Disconnecting root node in behavior tree editor has no effect

Gameplay - AI - Aug 27, 2020

I was testing some behavior tree content and wanted to temporarily disable a behavior tree entirely. So, I disconnected the root node from the selector node below it and expected that to disable the ...

Private and Protected functions do not display in the context menu in child BPs

Gameplay - Blueprint Editor - Aug 27, 2020

This was introduce by changes to UEdGraphSchema_K2::CanFunctionBeUsedInGraph in CL 9230757 for UE-66161. ...

Landscape Spline collision displays incorrectly

Tools - Landscape - Aug 27, 2020

Landscape splines are displaying their collision incorrectly. The collision is projected off the spline however this issue is purely visual. The collision itself still works as expected. This was t ...

Rotation gizmo continues to move when snapping is disabled

Tools - Aug 25, 2020

When snapping is disabled, the rotation gizmo never seems to stabilize. Continuing to hold the mouse down, even with no movement, will result in the rotation amount to continue changing by small amo ...

Preview Scene - Lighting angle changes between Profiles

Rendering - Features Teams - Aug 25, 2020

When previewing an object, the lighting angles change between profiles; the lighting position at '0' will also change when the Lighting Rig Rotation is set to another value, then back to 0 again.  ...

Unfocused Standalone window has reduced performance

Rendering - RHI - Aug 25, 2020

User description: When I run two windowed standalone instances to test multiplayer, the unfocused window gets about 2-5 fps...but if I focus on it, smooth 120fps, yet the opposite screen is now onl ...

Animation insights crash with linked anim graphs

Anim - Aug 25, 2020

From this UDN: https://udn.unrealengine.com/questions/601647/animation-insights-crash.html Looks like we need to cache the function index in FAnimNode_LinkedAnimGraph::DynamicLink and apply the sa ...

Painted Vertex colors are not retained when using "Convert Selection to Blueprint Class" in Child Actor mode

Gameplay - Blueprint - Aug 25, 2020

From the User Submission: I spent some time poking through the FComponentInstanceDataCache code and noticed that there is no component instance data saved/applied for'native' component types, so si ...