[CrashReport] UE4Editor_Engine!FRepLayout::InitFromObjectClass() [replayout.cpp:2211]

UE - Gameplay - Blueprint - Apr 19, 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: Property->Proper ...

Crash Re-Importing animation with Additive Layer Tracks after adding a bone to the hierarchy

OLD - Anim - Feb 13, 2017

Error message: Assertion failed: (Index >= 0) & (Index < ArrayNum) [Link Removed] [Line: 633] Array index out of bounds: 68 from an array of size 68 Source Context: 733 734 Extrac ...

ContentExamples: Physics Level Multiple misspellings

Docs - Samples - Jan 19, 2017

Physics Example 1.1 "StaticMesh" is one word The word Static Mesh is 2 separate words in unreal documentation https://docs.unrealengine.com/latest/INT/Engine/Content/Types/StaticMeshes/ ...

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 The logo continues to spin even after the button is no longer active.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 - Editor - 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 ...

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 ...