Localization Preview Button in Widget Editor does not appear to work

UE - Editor - UI Systems - Oct 3, 2019

The button used to toggle a localization preview in the UMG designer tab does not appear to have an effect on any of the text in the designer tab. ...

HTML5 - Mac - Packaged build does not run

UE - Platform - Mobile - Sep 22, 2016

Packaged shipping HTML5-Mac build does does not open in Safari. The user is prompted with a missing shader cache message (see screen cap). Occurs: with Development and Sipping builds. However, wit ...

Cannot interact with the scrollbar at the bottom of the Live Coding Console window

UE - Foundation - Cpp Tools - Live Coding - Apr 18, 2019

After completing a build using Live Coding, a horizontal scroll bar appears at the bottom of the Live Coding Console window since some of the lines of text are longer than the window can display. Th ...

Retainer Box's widgets will blend in incorrect space when retainer box uses material shader.

UE - Editor - UI Systems - May 8, 2017

Displaying the UMG content with a material shader will mean that it is drawn to an sRGB aware surface and thus blended in linear space instead of sRGB space (as widgets expect). In sceenshot-1.png t ...

FOnlineExternalUISteam::ShowWebURL doesn't react correctly to URLs with http:// as the protocol

UE - Networking - Dec 17, 2015

Code for this function below:bool FOnlineExternalUISteam::ShowWebURL(const FString& WebURL) { if (!WebURL.StartsWith(TEXT("https://"))) { SteamFriends()->ActivateGameOverlayT ...

Animating blueprint mesh duplicates uncontrollably

UE - Gameplay - Components - Apr 15, 2015

When animating within a blueprint of a subclass created in c++, the animating mesh replicates itself uncontrollably. Added to .h: UPROPERTY() UBoxComponent* BoxComp; UPROPERTY() USkeletalMeshCompo ...

Editing sub-components of an instanced blueprint will lose selection of current property value after pressing enter

UE - Gameplay - Jul 24, 2019

Result of pressing enter when editing text in a subcomponent (of an actor that exists in world) has different behavior than elsewhere in the editor. Confirmed in 4.24 MAIN @ CL 7519848 ...

UI transparency breaks when dragging a game window around the screen

UE - Editor - UI Systems - Nov 20, 2017

When a game window launched from UE is moved around the screen, any transparent elements on the screen will turn fully opaque. The loss of transparency also causes some text to become blurry. This d ...

Missing info in GPU breadcrumbs and DRED logs

UE - Graphics Features - Apr 21, 2025

Some breadcrumbs and D3D12 logs are missing data which should normally be filled in e.g. Breadcrumbs: > PostProcessMaterial %dx%d Material=%s [Active]. After investigating this, there seems to be a ...

Code based component name differs in Blueprint Components and main Viewports Details

UE - Gameplay - Blueprint - Jun 24, 2015

If the TEXT("") portion of CreateDefaultSubobject is changed then the name of the component will update in the main viewport details but will not update inside the blueprint based on the class. ...