Client Ensure FShaderMapResource_SharedCode::ReleaseRHI is still referenced on exit/shutdown

UE - Niagara - Rendering - May 7, 2024

Very rarely, the game client will crash on shutdown and the log will contain messages that look like: LogOutputDevice: Error: Ensure condition failed: false [File:Engine\Source\Runtime\RenderCore\ ...

Editor Crash When Using FRequestPlaySessionParams GlobalMapOverride To Load World Partition Map

UE - World Creation - Worldbuilding Tools - Data Layers - Dec 6, 2024

The licensee has been using a custom CVAR to launch directly into PIE for a world partition level. Since updating to 5.4, this now causes an editor crash. The main factor appears to be whether or no ...

UserSceneTexture Post Process Material Renders Incorrectly When ScreenPercentage is Below 100

UE - Graphics Features - Dec 17, 2024

When using a UserSceneTexture in a post-process material, a visible rendering issue occurs if the viewport's ScreenPercentage is set to below 100. This issue looks like it might stem from an incorre ...

LastRenderTime does not update when Occlusion Culling is disabled

UE - Graphics Features - Feb 25, 2025

When disabling Occlusion Culling, Components will not have their Last Render Time updated. ...

Backwards-compatibility broken for the CDOs of Python-generated Unreal Types because of missing redirectors

UE - Editor - Workflow Systems - Feb 11, 2025

Previously, all Unreal Types generated by python scripts would be created inside package "/Engine/PythonTypes". This was changed by [CL 32478991 in ue5-main branch], which meant to "remove the restr ...

Editor crashes if opening a sublevel containing a navmesh when persistent level is open

UE - AI - Sep 8, 2015

If the persistent level is open and a user attempts to open a sublevel that contains a navmesh, the editor will freeze and then crash. Frequency: 3/3 Crashreporter: N/A ...

Movable Skylight with DFAO creates Dark Areas when Combined with Reflective Material

UE - Graphics Features - Jun 9, 2016

A user on the AnswerHub pointed out that his reflections when using a Movable Skylight with Distance Field Ambient Occlusion produces black results when combined with a reflective material. I trace ...

Landscape Collision Offset with Visibility Mask

UE - Graphics Tools - Terrain - Landscape - Oct 12, 2016

Landscape Collision is offset when using the Landscape Visibility Mask. If you paint a hole within the landscape and use the Third Person Template character to walk over the holes, the character wil ...

World Override GameMode values do not save after project is closed and reopened

UE - Gameplay - Apr 17, 2015

The gamemode settings under world override do not save once the project has been saved, closed and reopened. ...

Crash when saving a Data Table that is referencing itself in a Data Table Row Handle

Tools - Feb 23, 2017

Crash when saving a Data Table that is referencing itself in a Data Table Row Handle. Reopening the project also causes a crash. *Regression: Yes This was fixed and working in 4.13-3037605 This i ...