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.  ...

Renaming Renderer in Parent Emitter breaks name in Child Emitter

Rendering - Niagara - Mar 12, 2021

Renaming a renderer in a parent emitter reverts the name of the renderer in the child emitter.  ...

The Reverb Effect in World Settings Does Not Update When Loading New Levels

Audio - Mar 12, 2021

When loading a new level via the Open Level node in Blueprints, the World Settings do not update the Applied Reverb Effect. When trying to reproduce the issue in 4.25.4, issue did not occur (the rev ...

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 ...

Precompile occurs in Niagara when Standalone is started, increasing load time.

Rendering - Niagara - Mar 11, 2021

In 4.26.1, if you remove the collision module from NiagaraSystem, the Precompile will not occur. ...