Unreal Engine Issues

FPlatformOutputDevices::GetAbsoluteLogFilename() not returning correct path when running multiple application instance

Undo and ConstructionScript break the AttachChildren array

Undo fills AttachChildren array with null by the undo serializer. After that, a construction script tries to remove child components from parent component's AttachChildren but it can't find its poi ...

uasset file not deleted when delete skeletal mesh

Compiling with VS2019 16.6 later causes garbled characters in output window

Using old behavior by applying true to NMakeUseOemCodePage property solves this issue.  in VCProject.cs​// Project globals (project GUID, project type, SCC bindings, etc) { VCProjectFi ...

Volumetric Translucent Shadow does not work

Async Task nodes placed in editor only modules should not issue a warning if the proxy class is set to something in the game module

Because the proxy class is set to something within the game module, no warning is placed on the node as the outer package ends up being a valid Runtime module. This should actually be a warning in ...

Custom Primitive Data are not (fully) functional with Instanced Static Mesh components

If the ISM component is not in a blueprint, but added directly inside the level, the CPD works. If the CPD value is set from a construction script through either the Default or Transient function, i ...

Unable to write custom stencil using Draw Material To Render Target

The attached project was created in 4.27 and is rendered on render target when checked in 4.27. However, this does not reproduce in 5.0 or later. ...

Infinite loop in UAnimSequence::ExtractRootMotion when sampling backwards

When sampling root motion backwards we can hit an infinite loop in ExtractRootMotion. This happens if the initial sample time + negative delta is off the end of the animation clip. In that case FA ...

[Audio Analysis][Ensure] - Sound Submix Spectral Analyzer Delegate Throws Ensure when Analysis Started Before the Delegate is Added

Hit the following Ensure when trying to use the Spectrum Analyser. Also hit this in 4.26 so it doesn't appear to be a regression. Occurs with any of the following Band Settings or when creating you ...