Crash dragging Sound Wave onto Output node in Newly Created Empty Sound Cue

UE - Audio - Aug 22, 2016

A licensee has reported a crash when dragging a Sound Wave onto the Output node within the Sound Cue editor. Regression? This crash does not occur on the 4.11.2 binary release CL-2946394 ...

Translucent Surface Material and Additive Particles not rendering on Metal in Shipping/Distribution

UE - Platform - Mobile - Oct 22, 2015

Certain Translucent Materials with Surface Lighting Models and Additive Material based Particle Systems will not render in Shipping/Distribution configuration using Metal Rendering on an iPhone 6*. ...

Clearcoat shader disappears if any asset using the Material leaves lighting

UE - Graphics Features - Aug 19, 2015

Clearcoat Shader will stop receiving lighting information if any mesh assigned the material using the shader leaves lighting. Also Reproduced in Launcher 4.9 Preview 4, Main-CL-2660934 [Image Remo ...

Spawned actors with meshes become invisible in editor after changing level

UE - Graphics Features - Sep 7, 2018

When moving actors spawned from within the editor to a new sublevel, their meshes stop rendering. However, if you open a new level then re-open the old level the meshes become visible again. You wil ...

[CrashReport] UE4Editor-CoreUObject!UObject::SetLinker(FLinkerLoad *,int,bool) [UObjectLinker.cpp:107]

UE - Foundation - Core - May 13, 2019

Comment from user in crash group:I updated unreal engine to 4.22.1 and changed the project version from 4.21.2 to 4.22.1 and now it crash whenever i open a map Generated from CrashReporter ...

Skeletalmesh editing can be slow when asset have a lot of morphtarget

UE - Editor - Mar 3, 2020

After investigation, the asset is not rebuild, what took time is the 2 following partThe serialization of the DDC where we have to initialize the morph targetsE:\P4\main\Engine\Source\Runtime\Engine ...

Default Hot Key or any key it is set to for Mesh Painting Brush Size doesn't work

UE - Editor - Workflow Systems - May 9, 2022

This is a regression – in 4.27.2 the bracket keys do not change the Brush Size even though it is the default hot key. However, changing the hot key to something else works in 4.27.2. Hot Keys are n ...

Opening map assets from "Open World Demo Collection" causes engine to freeze

Docs - Samples - Mar 9, 2020

Opening map assets from the "Open World Demo Collection" sample results in the engine freezing. No crash occurs, just a lock up of the engine at 75%. There is the possibility that it could take s ...

Engine crashes when trying to remove unused bones from skeleton

UE - Anim - Runtime - Mar 10, 2021

Engine crashes when i try to remove unused bones. I have lot of things going on in those characters, they all share same skeleton. There are anim blueprints with control rig and pose drivers, there ...

Variables can no longer be set as a DataTableRowHandle type

UE - Gameplay - Blueprint - Sep 14, 2015

Variables can no longer be set as a DataTableRowHandle type. The option is no longer available in the Variable Type dropdown. This is a regression: this was possible in 4.7.6. Reproduced in 4.8.3 b ...