A packaged game that includes a code class that references a widget Blueprint will display an error on launch stating that the widget blueprint cannot be found.

UE - Editor - UI Systems - Sep 24, 2015

If a widget Blueprint is referenced in code, an error is displayed when the packaged game is launched stating that the widget could not be found (in 4.11 the widget still appears to be successfully ...

Compiling Unreal Lightmass Fails When Using Visual Studio 2015 Update 2

UE - Foundation - Core - Apr 4, 2016

When attempting to compile Unreal Lightmass in the 4.11 source build, a compiler error pops up when using Visual Studio 2015 Update 2. Error Message: "d:\unrealengine-release\engine\source\program ...

Light Banding for Point Lights at long distances from the World Origin

UE - Graphics Features - Jan 4, 2017

When using a point light far from the world origin the light will have banding. The shadow bias and filter sharpen can help but they are not as consistent as settings near the world origin. The only ...

[Crash] UE4Editor-MetalRHI.dylib!ReportMetalCommandBufferFailure()

UE - Graphics Features - Jan 25, 2017

Crashes when resizing Standalone game window by dragging lower right corner to and fro to increase/decrease window size. [Link Removed] Error message: SEGV_MAPERR at 0x3 Source Context:none Mos ...

GPU specific issue with Lighting while moving - GTX 770

UE - Graphics Features - Apr 26, 2017

While testing GPU - ContentExamples - Lighting - Nvidia gtx 770 in the 4.16 GPU Compat Pass, I noticed a strange effect on lights while the player is in motion. I've had multiple people attempt to ...

Instanced Properties create temporary references on child objects in Blueprints

UE - Gameplay - Blueprint - Nov 29, 2017

When an object whose class has the EditInlineNew specifier is added to an instanced property, any children of the blueprint will have a reference to the same object that was created for the instance ...

Spherecast against complex geometry is returning odd results

UE - Simulation - Physics - Sep 19, 2023

Turning on batching of sphere casts when colliding against complex gives incorrect results. Affects debug output and vehicle wheels and body movement. The issue is with the batch query mode which ...

Enabling World Composition Skips Intro Movies

Tools - Jun 24, 2016

Startup movies are skipped when World Composition is enabled. Even with the 'Wait for Movies to Complete' option enabled, the startup movie plays for a very short time, and then the level is loaded ...

Moving Landscape causes Crash with Landscape Grass Output in Landscape Material

UE - LD & Modeling - Terrain - Landscape - Jun 16, 2016

Editor crashes when utilizing the Landscape Grass Output node within a Material, and then attempting to move the landscape with the material applied. I narrowed this down to being directly related ...

[CrashReport] UE4Editor_UnrealEd!SaveWorld() [filehelpers.cpp:359]

Tools - Aug 31, 2016

This Jira was created from CrashReports submitted by the public due to the high number of occurrences. Descriptions from users are provided below. Error message: Assertion failed: !bIsReentrant [L ...