Blueprint compile error can occur when trying to override a BlueprintImplementableEvent that takes a custom enum as a parameter

UE - Gameplay - Blueprint - Mar 1, 2017

When a BlueprintImplementableEvent that takes a custom enum as a parameter is overridden in a Blueprint, it will throw a compile error. The compile error states that the event cannot be overridden b ...

Actor Sequence Component Not Working While Playing in Standalone

UE - Anim - Sequencer - Jun 6, 2017

When using an Actor Sequence Component in an actor blueprint, the sequence will not play in Standalone. In the test, a cube was used and was increasing its scale using the sequence. When playing in ...

Visibility of World Outliner doesn't affect skylight

UE - Graphics Features - Nov 27, 2018

Visibility of World Outliner doesn't affect skylight. But it affects other kinds of lights like Point Light, Directional Light. I found that USkyLightComponent::CreateRenderState_Concurrent() doesn ...

Param usage bug when using switch params

UE - Rendering Architecture - Materials - Mar 28, 2022

From the ticket: In a material instance using the attached master material if A is TRUE and B is FALSE I expect to be able to configure param C in the UI. However param C is shown only when Useswi ...

Wrong normal map compression settings when importing USD file

UE - Editor - Content Pipeline - USD - Apr 22, 2022

Customer Comments: this is just a workflow issue where you need to set the compression settings to normal or tick the sRGB checkbox to fix the shading issue Regression testing done in //UE4/Rele ...

BP - Invalid component variable reference 'Access None' spam in a dedicated server build if the component class returns 'false' for NeedsLoadForServer().

UE - Gameplay - Components - May 10, 2016

If a component class returns 'false' for NeedsLoadForServer(), then variables will not be included in the class in a cooked/packaged dedicated server build, and thus any variable references in scrip ...

Color Picker will open half or more off screen

Tools - Dec 15, 2015

Users are experiencing an issue where the color picker is opening half or more off screen. This is particular bad for users who only have one monitor. It is most prevalent in a UMG Widget BP, but ...

Allow Window Resize has no effect on Linux

UE - Platform - Linux - Jun 8, 2017

Checking the option for Allow Window Resize in Project Settings allows a the borders of a standalone window to be grabbed and used to resize the window. This does not behave the same on Linux and t ...

QAGame projectile collisions are not working

UE - Simulation - Physics - Jul 3, 2017

I was not able to repro this with template projects in //UE4/Release-4.17. I was not able to repro the lack of collision to the same static mesh I shot at if I tried to run into it. That is why I me ...

C++ Class Creation Wizard does not setup include path properly when using a sub-directory with Public/Private Classes

Tools - May 7, 2020

The creation wizard is not correctly adding the #include path in the CPP file. To fix the issue to get the project to compile you have to add the path in the .CPP file within Visual Studio. In this ...