Error: FAsyncPackage::LoadImports for <some asset>: Skipping import PaperTileMap /Script/Paper2D.Default__PaperTileMapActor:RenderComponent.PaperTileMap_0, depends on missing native class

UE - Gameplay - Blueprint Compiler - Jun 30, 2020

User reporting seeing this error start appearing in 4.25.1 (possibly 4.25.x, unsure if they were previously testing on 4.25.0 or not). It appears 'benign' as the expected data still gets loaded, bu ...

Actor Component instances have their settings reset to default when compiled in 4.17 (Compilation Manager)

UE - Gameplay - Blueprint Compiler - Aug 10, 2017

REGRESSION: Yes, does not occur in 4.16 When converting a 4.16 project to 4.17, any actor component instances will have their settings reverted back to default when the user compiles the blueprint. ...

AddToPlayerScreen not filling of player screen by widget.

UE - Editor - UI Systems - Jun 21, 2019

At screen resolutions other than 16: 9, widgets added with AddToPlayerScreen can not be completely filled. The final size calculated by GameLayerManager seems to be incomplete. ...

Crash upon opening packaged game when Event Driven Loader is disabled

UE - Foundation - Core - Apr 26, 2019

Packaged games are unable to open when Event Driven Loader is disabled. The error message given is: Assertion failed: !Linker->GetSerializeContext() [File:D:\Build\++UE4\Sync\Engine\Source\Runtime\C ...

HTML5 shows up as black screen in FireFox 32-bit

UE - Platform - Mobile - Apr 16, 2015

Packaged HTML5 games are not running on FireFox 32-bit Version 37.0.1; Some projects will also provide you with a scripting error that appears when you attempt to run the game on 37.0.1 Spoke with ...

MetaSounds isn't working with Modular Game Features - LogMetaSound: Error: Target interface is not registered

Audio-Gameplay-Engineering - Nov 22, 2022

Reproduced 3/3 times. Issue also occurs in //UE5/Release-5.0 - CL 20979098 Binary. Confirmed NOT a Regression. Errors:[2022.11.22-18.11.28:472][  0]LogMetaSound: Error: Target interface is not regi ...

ACEScg Working Color Space renders more saturated than previous versions

UE - Virtual Production - Rendering - Color - Jan 11, 2023

Regression: Tested in UE5/Release-5.0, this issue does not occur so this is a regression. This appears to be effecting all Working Color Spaces as well. Each Working Color Space chosen renders the ...

Post processing rendering artifacts Nexus 6

UE - Platform - Mobile - Dec 3, 2015

When you push a mobile targeted project to the Nexus 6, the rendering is all sorts of wrong. When you hover over to where the items are, the screen goes black. There is also a large black or cyan sp ...

FString.Mid doesn't react appropriately when given negative values for the Count variable

UE - Foundation - Core - Jul 16, 2015

If you use a 5 character string (hello) to call the Mid function and provide 0 for start, -1 for count, it'll give you the entire string. This should either return an assert or treat all negatives a ...

Some Niagara FX does not show up in MovieSceneCapture when AgeUpdateMode is DesiredAgeNoSeek

UE - Niagara - Cinematics - Sep 17, 2024

CL23957356 changes how to calculate FrameOffset in FNiagaraSystemUpdateDesiredAgeExecutionToken::Execute(). After this change, DesiredAge + FrameOffset could be 0.0 for some a couple of initial fram ...