Unreal Engine Issues
Unreal Engine Issues
StompMalloc throws error in Embree setup
UE - Graphics Features - May 27, 2021Licensee has proposed a potential workaround (initialising vertex array with at least 1 element). ...
Shadows flicker when Forward Rendering is enabled alongside Lumen
UE - Graphics Features - May 26, 2021When enabling Forward Shading in a project while using the Lumen Global Illumination system, the shadows in the viewport begin to flicker and occassionally entire meshes may appear black. The lighti ...
Crash when user enters PIE with an Oculus device connected
UE - Platform - XR - May 26, 2021The third person template project is crashing when someone enters PIE with an Oculus VR headset connected. This is a regression, as it does not occur in 4.26.2 CL 16018004. ...
Recently created projects using the Live Launcher do not show up in the "My Projects" menu of the Launcher
Portal - May 26, 2021Recently created Projects not showing up in the Launchers "My Projects" menu. Recently Created projects also do not show up in the editors projects menu [Link Removed] ...
Crash when setting Kill Particles to true on some emitters in a Niagara System
UE - Niagara - May 20, 2021When setting the Kill Particles boolean of an emitter in a Niagara System to true, the editor crashes. So far, I've only been able to reproduce the issue with the NS_EH_KP system that a user provide ...
FileSystemDerivedDataBackend may output a corrupted access log
UE - Foundation - Core - Derived Data - May 20, 2021This problem is caused by the AccessLogWriter has not been flushed at the termination. The following workaround flushes the Writer.class FFileSystemDerivedDataBackend : public FDerivedDataBackendInt ...
Sorting objects at EndLoad has a non-deterministic behavior
UE - Foundation - Core - EditorLoader - May 14, 2021This non-deterministic behavior is caused by sorting by program address. ...
[Submix][Content Browser] - Deleting an unsaved Submix asset (any type) causes them to reappear when creating a new asset
UE - Audio - Submixes - May 13, 2021Deleting unsaved Submix assets causes them to reappear the next time you create a new asset. Issue does not occur in 4.26, but does occur in 4.27 and 5.0. ...
Very thin meshes cause flickering with emissive materials.
UE - Graphics Features - May 13, 2021The licensee has reported that when you make a mesh extremely thin (e.g. z = 0.0001), it can cause emissive materials applied to the mesh to flicker. ...
SceneCapture2d affects Niagara GPU particles with translucency sorting enabled
UE - Niagara - May 11, 2021The issue comes from sorting being abled while having a scene capture actor. The enclosed 7z contains assets relevant to reproducing the issue. ...