Unreal Engine Issues

Multi-process cooking does not complete in UE5.3.0

Projects with multi-process cooking enabled will not complete packaging. If MPCook is disabled, packaging can be completed.  ...

DrawDebug elements on screen affect aspect ratio letterboxing

During gameplay when the view target camera's aspect ratio is not exactly the viewport's aspect ratio, the presence of rendered debug draw elements (DrawDebugArrow, etc) makes the viewport's rendere ...

Landscape Transparent with r.Lumen.DiffuseIndirect.Allow 0

XR -ARKit - Tracked Planes are not attached to the real world objects when moving the camera around

When the user attempts to place an object on a tracked plane it slides around the environment not staying in the expected place. Using the ARDebugcheck project with the show planes option you can se ...

Crash when making Android package in SlateTextShaper.cpp

Crash when outputting garbled text when creating Android package. It did not occur in my colleague's environment using English OS, but occurred in my environment using Japanese OS. This issue should ...

[CrashReport] UE4Editor_Engine!UMaterialExpression::GetOutputType() [materialexpressions.cpp:859]

This is an infrequent crash in the 4.18 release. Users have not provided any descriptions of their actions when the crash occurred. Source Context 849 uint32 UMaterialExpression::GetOutputT ...

Assertion failed on reimporting FBX scene

Following code works as a work around : void SFbxSceneStaticMeshReimportListView::OnChangedOverrideOptions(TSharedPtr<FString> ItemSelected, ESelectInfo::Type SelectInfo) { #if 0 check(ItemSele ...

BokehDOFRecombine Incurs Cost Even While DOF Is Not Enabled

While separate translucency is enabled DOFRecombine will incur a cost even when not using DOF (Scale of 0 or blur size of 0). Maybe we can check to see if those values are == 0 (meaning DOF is effec ...

Implied Decal Blend Modes don't properly account for Material Attributes usage

I've attached a project with the necessary materials that demonstrate this issue. I would expect that just because a Set Material Attributes node is inside a material graph it wouldn't affect the de ...

OnParticleCollide Not Returning Velocity Values Properly

OnParticleCollide doesn't return Velocity on every collision. User description: "If you add a particle emitter, and add an Event Generator - Collision and Actor Collision Binding an event to tha ...