Skylight Intensity causes brightness discrepancy between the pathtracer and realtime renderers

UE - Graphics Features - Aug 26, 2024

In a scene without a sky sphere, increasing the skylight intensity will cause the sky to brighten in the pathtracer. Other renderers do not brighten the sky, and the intensity increase is applied on ...

Ensure when using ellipsis overflow method with very small Slate text boxes

UE - Editor - UI Systems - Slate - Aug 12, 2024

The Ellipsis overflow method on text widgets can cause an ensure to trip as a result of a render batch being sent with no indices. We could guard against this in SlateRHIRenderingPolicy by checking ...

Synthetic benchmark is affected by Scalability Settings

UE - Rendering Architecture - RHI - Feb 19, 2025

Sumo Digital Ltd. has reported that the synthetic benchmark has skewed GPUIndex scores when changing graphics scalability settings (i.e. r.LumenScreenProbeGather.DownsampleFactor). They are currentl ...

Crash at compile time when using a VariableSet node with a local variable created by pasting a private property

UE - Framework - Blueprint - Oct 7, 2025

When a property is created in this way, a local variable with a Private flag is generated. Since such a variable is generally not desirable, it would be better to remove the Private flag upon pastin ...

Square Artifacts Appearing On Landscape Normals In Packaged Build

UE - Graphics Tools - Terrain - Oct 31, 2025

In packaged builds exclusively, a square pattern can appear in the Landscape geometry normals, aligning with the edges of the tiles. Visualizing the GBufferA does not show much, as the variation is ...

Opening a DataTable that is set to a Struct that is using a Key variable will crash the editor

Tools - Nov 3, 2015

Opening a DataTable that is set to a Struct that is using a Key variable will crash the editor User Description: I'm getting this crash when using Key variable in DataTable. I was able to repro i ...

Crash in Persona when adding Notifies

OLD - Anim - Apr 14, 2015

REOPENED NOTES: Crash Reporter: [Link Removed] Test Project: [Link Removed] Open project and press Play: Editor will crash. User reports this being due to sequential animations not being the sam ...

Opening particle system crashes editor

UE - Graphics Features - Jan 27, 2016

Opening a specific particle system crashes the editor. If the particle system is used within a level and the level is played, the editor will crash with no callstack. Logs are attached. Frequency: ...

"Failed to Merge Bones" window can pop up repeatedly with no "...to all" option

OLD - Anim - Jul 6, 2015

User is experiencing a situation where he gets this window 200 times and no way to get out of it with a single click. ...

Crash when renaming assets from the Persona asset browser

Tools - Mar 3, 2015

Crash when renaming assets from the Persona asset browser [Link Removed] [Link Removed] LOG IS ATTACHED ...