"Failed to Merge Bones" window can pop up repeatedly with no "...to all" option

OLD - Anim - Jul 6, 2015

User is experiencing a situation where he gets this window 200 times and no way to get out of it with a single click. ...

Changing variable defaults in parent BP does not update changes in child

UE - Gameplay - Blueprint - Dec 9, 2014

The changes made to the values for a transform variable setup in a blueprint will not show up in a child BP until the yellow arrows is pressed to reset to default. Other variable types update autom ...

Max Angular Velocity Value Being Reset

UE - Gameplay - Jun 6, 2016

The value of Max Angular Velocity on a component is being reset after changing the value and compiling the blueprint. Found in 4.12 binary, reproduced in Main CL 2994701. Could not reproduce in 4. ...

Crash on play when AIPerception Senses Config element is set to "sense config" options

UE - AI - Sep 18, 2015

Setting AIPerception component Senses Config to AI Damage / AI Prediction / AI Team sense config will cause the editor to crash on Play. This may be related to [Link Removed] Crash Reporter [Link ...

Lights placed in a Layer that are hidden will not be visible in PIE

Tools - Sep 9, 2015

Placing any lights in a Layer and marking as hidden will not render when PIE. Layers should only be editor only, even if marked as hidden. Also test in MAIN CL-2685425 where this is showing the sa ...

User defined struct pins shows display a string of letters & numbers when switching Editor language

UE - Gameplay - Blueprint - Jan 18, 2017

Editor language switch can turn struct get/set nodes pins(split) to display extra string of letters & numbers after their original name. ...

Freeze occurs after some time when tick group is set to TG_PostUpdateWork on a class

UE - Gameplay - Nov 21, 2017

Multiple users have reported an issue where their packaged games are freezing after an indeterminate period of time. The reproduction steps and logs of each user are different but the reproduction s ...

[CrashReport] UE4Editor_Engine!FStaticMeshSceneProxy::RemoveSpeedTreeWind() [staticmeshrender.cpp:262]

UE - Graphics Features - Jan 26, 2018

No user comments on crash group ...

The screen will be darker than other platforms(Android,PC/Mac preview) on IOS if both MSAA and MobileTonemapperFilm enabled

UE - Platform - Mobile - May 16, 2019

[Image Removed] [Image Removed] [Image Removed] [Image Removed] ...

Crash when using Share Material Shader Code and Native Metal Libs with r.Shaders.Optimize=0

UE - Rendering - Architecture - RHI - Mar 17, 2020

Using r.Shaders.Optimize=0 with native metal libs results in a crash of the packaged build at runtime. Workarounds is to either not use native metal libs for text shaders or in MetalShaders.cpp co ...