[CrashReport] UE4Editor_UnrealEd!PackageTools::ReloadPackages() [packagetools.cpp:576]

Tools - Jun 29, 2017

This is a common crash affecting users on 4.16. Users have not provided any descriptions, so additional information is currently unavailable. Source Context 561 ::SortPackagesForReload( ...

Copying more than 1 socket between skeletal meshes retains only one socket name

UE - Gameplay - Jul 8, 2015

When you select two or more sockets in one skeletal mesh and copy them and paste them into a different skeletal mesh, all sockets will be named after the last socket selected followed by _#. ...

Unreal Logo in Display 3.1 Continues to Spin After Button is Turned Off

Docs - Samples - Sep 21, 2016

While writing test cases for the Blueprint Communication Content example, I came across this inconsistency. The logo continues to spin even after the button is no longer active. I expected the logo ...

Possible: JPG encoding for Highscreenshot broken in 5.1 Linux build

UE - Platform - Linux - Feb 10, 2023

UDN report of JPG encoding not working: [Link Removed] Can we ask QA to try to repro? ...

Unable to affect setting cubemap blend in skyLight and reflections on transluscent materials

UE - Rendering - Architecture - Oct 17, 2023

Attempting to blend SkyLight Cubemaps via the SetCubemapBlend function to blend between different Cubemaps to make the changes seamless is not reflected. As a workaround, in LumenTracingCommon.ush, ...

Setting Slate.ShowBatching to 1 makes the entire screen green unexpectedly

UE - AI Workflows - UI Systems - Slate - Jun 19, 2025

This issue may have occurred due to a refactoring of the related functionality during the engine update from version 5.4 to 5.5. The main reason is that the randomization of BatchColor doesn't work ...

Editor crashes due to a material that contains MPCs migrated from another project

UE - Rendering - Architecture - Materials - Apr 29, 2024

[2024.04.29-16.49.46:563][970]LogUObjectGlobals: Warning: LoadPackage can't find package /BEURRE_040824_041224/NewMaterialParameterCollection. [2024.04.29-16.49.46:563][970]LogUObjectGlobals: Warning ...

[CrashReport] Assertion on in UMaterialInterface::InitDefaultMaterials()

UE - Graphics Features - Jun 28, 2017

This is a common Mac crash occurring in the 4.16.1 release. I have not found any evidence of it occurring on Windows. The callstack closely matches [Link Removed], which was briefly experienced by ...

Up Ratio on the Gear Setup for Vehicle Movement Component does not work correctly

UE - Simulation - Physics - Sep 11, 2015

When changing Up Ratio for the Gear Setup in a Wheeled Vehicle's Vehicle Movement Component, there are some weird results. At 1.0 for Gear Setup, the gear should shift once RPM is at max but it will ...