Unreal Engine Issues

Virtual Memory leak when using specific rendering settings in the template project

When a project is run with these settings in a template project, untracked virtual memory increases. Cvars r.GBufferFormat 3 r.Lumen.TraceMeshSDFs 1 r.Lumen.TranslucencyReflections.FrontLayer.Enab ...

Niagara Mesh Renderer registers NumParticles x NumMeshVariants TLAS instances

When using the Niagara Mesh Renderer with multiple mesh variants selected via MeshIndex, the number of TLAS instances allocated is NumParticles × NumMeshVariants and enabling the Path Tracer can ca ...

Regression: Several project settings, especially from built-in Plugins, are being silently erased when previously they were not, which is perceived as a bug

In UE's Project Settings, some pages are saved automatically to the project's "Config/Default<CATEGORY>.ini" file (meant to be version-controlled) on every change. Other pages have buttons "Set as D ...

Can't package project with custom engine plugin enabled.

Crash when applying Decal material with Distance Cull Fade node to Decal Actor

The Editor crashes when applying a Material with a Distance Cull Fade node to a Decal Actor. Fatal error: [Link Removed] [Line: 730] Missing uniform buffer at slot 2, stage SF_Pixel. Please check ...

Skylight Leaking Tint in Reflection

From 5.6 onwards, Skylight Leaking is much stronger in reflections than in the world. Also tested on //UE5/Release-5.6, CL 45232827 ...

Fix up IOS errors calling UI API from non-UI threads

Motion Warping component disappears on Editor restart or when swapping engine versions.

Motion Warping component is disappearing on Editor restart or when swapping engine versions. When this occurs, the BP has the following Compiler Results messages: Component class is not set for'Mot ...

Submix Level's minimum changes from -96dB to -60dB after making any changes to value

Reproduces 3/3 times. Issue does not occur in //UE5/Release-5.1 - CL 23901901 Binary. Confirmed Regression. ...

GAS: FActiveGameplayCueContainer::RemoveCue crash while iterating removals when consecutive Cue tags are conditionally added and the conditional effects removed in ascending order

When removing gameplay effects by tag, if the tag that is being removed has other tags that are dependent on it in a cyclical way an "array out of bounds ' error can be triggered. ...