Emitter Delay Range will only recalculate each loop when Emitter Duration is checked True

UE - Graphics Features - Jan 12, 2015

To have a Particle System use an Emitter Delay Range that is chosen on each loop of the emitter, you must have under Duration, Duration Recalc Each Loop set to True. ...

3D Widgets do not render correctly for GearVR

UE - Platform - XR - Jun 15, 2016

3D widgets attached to the camera render incorrectly when compared to the oculus rift. When the Widget is centered to the camera and attached to it in the Character BP the widget will render incorre ...

Unexpected vertex normal orientation when manipulating some morph targets

OLD - Anim - Jul 19, 2016

Unexpected vertex normal orientation when manipulating some morph targets. This may be related to [Link Removed], but felt different enough to enter on it's own. ...

Blutility button not working after editing blueprint - need to reopen window

UE - Gameplay - Blueprint Editor - Feb 28, 2018

Blutility buttons are broken if graph is edited while panel is open. User reported bug Video repro attached ...

Substrate Add node only adds the first Substrate Slab's Emissive value when "Use Parameter Blending" is enabled

UE - Graphics Features - Substrate - Jan 10, 2025

As per the steps to reproduce, the Substrate Add node only adds the first Substrate Slab's Emissive value when "Use Parameter Blending" is enabled. Leaving "Use Parameter Blending" unchecked on the ...

Camera resets to default height on player movement in the X+ direction after capsule size change

UE - Gameplay - Aug 11, 2016

Camera resets to default height on player movement in the X+ direction after capsule size change. User Description: If I change capsule half height to lower than 96, for example to crouched half h ...

When r.SSR.Stencil is enabled, there is wrong logic observed.

UE - Graphics Features - Dec 19, 2025

When r.SSR.Stencil is enabled, the areas with high roughnesss are not discarded and Unlit materials are incorrectly handled. See the linked EPS case (Additional Info URL) for a full explanation of ...

[CrashReport] UE4Editor_CoreUObject!PackageReloadInternal::LoadReplacementPackage() [packagereload.cpp:274]

Tools - Aug 17, 2018

No user comments in crash group 262 UPackage* LoadReplacementPackage(UPackage* InExistingPackage, const uint32 InLoadFlags) 263 { 264 if (!InExistingPackage) 265 ...

Console Command 'ModifySoundClass' is Unrecognized

UE - Audio - Mar 23, 2015

When running a game in the editor and using the Command Console 'ModifySoundClass', the console returns saying the command is unrecognized. It is my understanding, that even if you do not create ne ...

Enum Variable doesn't pull the correct Default Value

UE - Gameplay - Blueprint - Aug 10, 2015

Enum Variable doesn't pull/print the correct Default Value User Description: (Blueprint) User defined enum in 4.9 getting corrupted I believe there is a severe underlying issue in 4.9 regarding u ...