UTextBlock::SetText doesn't work in global invalidation

UE - Editor - UI Systems - Slate - Jan 24, 2022

This happens on consoles running in 4k so DPIScale would be 2x. The character between lines is just a newline (Shift + Enter in the text field in editor), the text is set with SetText, possibly a f ...

Crash when trying to copy-paste nodes in a module graph

UE - Niagara - Jun 1, 2022

The nodes I tried to copy are in the screenshot. Hit an ensure before the crash: Ensure condition failed: ScriptVariable != nullptr [NiagaraScriptGraphViewModel.cpp][Line: 294] Script variable sh ...

Mass Agent Component implementation triggers Aggressive Default Reference Replacement ensure

UE - AI - Mass - Nov 13, 2023

Workaround: Construct the DefaultSubobject with ... = CreateDefaultSubobject<UMassAgentComponent>(TEXT("MASS"), true); The issue appears to be that the DefaultSubobject holds a pointer to the CDO ...

Same Summary for Load Game from Slot and Save Game to Slot

UE - Gameplay - Blueprint - Jul 8, 2015

After creating a blueprint and adding the functions "Save Game to Slot" and "Load Game from Slot," the same summary occurs for both when moused over. The message for both is Save the contents of the ...

Changing Area Light Settings In Blueprint Causes Crash

OLD - Enterprise - Aug 27, 2018

Changing area light settings in blueprint will Cause a crash. Found in 4.20 CL# 4302132 and 4.21 CL# 4307852 Unable to test in 4.19 due to provided project being in 4.20 ...

Copy Procedural Mesh from Static Mesh Component does not work correctly when the order of material slots is different

UE - Graphics Features - Oct 15, 2019

This issue occurs when the section and material slot order do not match In this sample project:[Link Removed] According to a report from the licensee, the order of Sections seems incorrect.[Link R ...

Deferred spawned actors can receive BeginPlay before they are finished spawning

UE - Framework - Performance - May 18, 2023

Actors that are deferred spawned on BeginPlay can be added to the world while AWorldSettings::NotifyBeginPlay is still iterating the world's actors and dispatching BeginPlay. AActor::DispatchBeginPl ...

AHUD::DrawMaterialSimple does not render on ANdroid device when MobileHDR is disabled

UE - Platform - Mobile - Oct 23, 2015

After cooking, If user installs same project which contains drawing material via DrawTile function in HUD, is not displayed in es2, with MobileHDR off (verified on android device) DrawTile script i ...

Level Instance Editor Paths not resolving correctly

UE - World Creation - Worldbuilding Tools - Level Instances - Jun 25, 2024

Soft refs to actors within level instances are not working for:Level Script.BP assets dynamically spawned at runtime.Placed BPs may also have their soft ref broken (maybe this issue is more-so relat ...

4.23 Preview crashes with command line arguement -AutomatedMapBuildUseSCC = False

UE - Foundation - Core - Aug 1, 2019

Using an automated script in command line arguments to build project map causes a crash. Note: that it will not crash when 'UseSCC=false' is omitted, but it will not build the map either. Screen gr ...