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 ...

Daydream "Quit Game" node returns to homescreen of device instead of Daydream VR home

UE - Platform - XR - Feb 14, 2019

Google App store rejects UE4 apps with the response: "App switches to a 2-dimensional view unexpectedly When in VR, your app should never display any 2D images. For more information and examples, p ...

Post Process Materials do not appear in Sequencer

UE - Anim - Sequencer - Jun 17, 2019

When Having a SkeletalMesh or Static Mesh, you can control Material Parameters directly. Something like that is missing for Post Process Materials. Matinee had a generic Float or Vector Track.If Se ...

Unable to launch version 4.24.1 after fresh installation. Assertionfailed IsValid()

Tools - Dec 31, 2019

User is receiving a crash after a brand new installation of version 4.24.1 NOTE: User is able to launch 4.20 - 4.23.1 without issue. "I tried reinstalling the editor build, updating all of my dr ...

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 ...

Crash when null texture parameter is present on a MIC

UE - Rendering Architecture - Materials - Apr 22, 2022

From UDN: [Link Removed] Proposed fix: int32 FHLSLMaterialTranslator::TextureParameter(FName ParameterName, UTexture* InDefaultValue, int32& TextureReferenceIndex, EMaterialSamplerType SamplerType ...

All public inline methods of class "FBlueprintEditor" are inaccessible to other modules due to "DLLIMPORT"

UE - Framework - Blueprint Editor - Jun 28, 2024

Class "FBlueprintEditor" has several inline getter methods as part of its public API (e.g. GetPreviewActor() and GetPreviewScene()). However, even though they are public, those methods are inaccessi ...