Crash occurs when adding code to custom node in Material Function.

Rendering - Mar 16, 2021

A Salesforce ticket reports that entering the above code into a custom node in a Material Function causes a crash. I was able to repro his crash reliably. This is a regression. Working as expected ...

Scaling sphere with gizmo causes it to not work with line trace

Tools - Editor Gizmos - Mar 16, 2021

Changing the scale of an actor with the level editor gizmo follows a very different codepath than changing it via the details panel. A side effect of this seems to be that line traces will no longer ...

incorrect virtual texture shader code(in FinalizeVirtualTextureFeedback) on Mobile forward platform

Rendering - Mar 15, 2021

in the function FinalizeVirtualTextureFeedback, the micro "USE_DBUFFER && MATERIALDECALRESPONSEMASK" returns true on mobile forward, while there is no DBUFFER on Mobile forward obviously. This takes ...

IOStore : Packaged game crashes when doing garbage collection right after cancelling async loading by UnloadPrimaryAssetList

Core - Loader - Mar 15, 2021

Packaged game without IOStore never hits this error. ...

Tagged binding exists after deleting object binding in sequence

Anim - Sequencer - Mar 12, 2021

Tagged bindings aren't deleted when their object binding is deleted in the sequence.  ...

Niagara Component can crash if ticked with a null tick function

Rendering - Niagara - Mar 12, 2021

Niagara components don't null check their tick functions, and can cause a crash as a result. Compare to UParticleSystemComponent::TickComponent which does. It's fairly common in the engine to pass n ...

Pasting an Emitter In Niagara System is not created at cursor position

Rendering - Niagara - Mar 10, 2021

Not a regression as this also occurs in //UE4/Release-4.25.4 Behavior should work like other BP nodes, where copy/pasting puts the node where the mouse cursor is located. Current behavior is time ...

Most Material Instances render as the World Grid Material when placed on a Skeletal Mesh

Rendering - Mar 10, 2021

When adding certain Material Instances to a Skeletal Mesh, the Material Instance break and renders as the World Grid Material. This persists in the project and the Material Instance cannot be used u ...

Engine crashes when trying to remove unused bones from skeleton

Anim - Runtime - Mar 10, 2021

Engine crashes when i try to remove unused bones. I have lot of things going on in those characters, they all share same skeleton. There are anim blueprints with control rig and pose drivers, there ...

Incorrect SRV bindings in RTWriteMask shaders.

Rendering - Mar 8, 2021

RTWriteMask shaders were using incorrect array bindings, causing visual artifacts. ...