Unreal Engine Issues

CharacterMovementComponent: simulated proxy can go into falling due to linear velocity quantization when using custom gravity

The character movement component in  void UCharacterMovementComponent::SimulateMovement(float DeltaSeconds) evaluates whether to find the floor when simulating the movement of the simulated proxy ...

Materials with transparency still visible in alpha with holdout in Render layers.

The Transparent materials like the Glass don't behave correctly in Raster (in PT is working as expected).  They are visible in Alpha with Holdout.  This is an Engine limitation for now. But we sho ...

Enhanced Input Action Key Remapping maps old mapping over incoming mapping in an unintuitive way

On EnhancedInputSubsystemInterface.cpp:1040, RebuildControlMappings has a check to preserve mappings for identical action key maps. In most cases, this appears to work correctly; however, in the cas ...

PostLoadGroup can cause materials to cache GWhiteTexture into uniform expressions

It may occur that during loading screens, materials using material layers will load with GWhiteTexture before the real textures are ready. This seems to be because of a race condition due to PostLoa ...

TakeRecorder does not add a track to a level sequence when niagara FX is spawned

In UTakeRecorderActorSource::EnsureObjectTemplateHasComponent() function, MakeUniqueObjectName() generates the same name of a component which CachedObjectTemplate for TakeRecorder has already had. T ...

Certain Niagara particles can disappear after switching to the debug cam

When duplicating multiple actors with alt+drag, Translation/Rotation widget goes to incorrect coordinate space

Note: This bug has been observed in all tested engine versions, from UE 4.24 to UE 5.3 and in ue-main. When shift+selecting multiple actors in the Level Editor, the currently-active transformation ...

RenderTrace fatal error, shader expected a uniform buffer at slot 1...

RenderTrace plugin does not appear to have been updated for a change that moved the GPUScene out of the View buffer to its own uniform buffer. (CL 24027890) The test project is based on FirstPerson ...

Recent change to Material Expression code missing a case for "exp2" function in switch (cpp)

The function "FMaterialDerivativeAutogen::GetFunc1ReturnType(...)" does not have a case for "EFunc1::Exp2". Also found in Release-5.4, CL: 331987674 ...

FNotifyNodeInterface crashes when referenced Notify is invalid

Currently FNotifyNodeInterface directly references notifies that live within the related anim sequence.  This can cause intermittent crashes when notifies are removed as the UI can still reference t ...