bIgnoreAllPressedKeysUntilRelease behaves differently for triggers in EnhancedInputAction and triggers in InputMappingContext

UE - Gameplay - Input - Aug 10, 2023

For actions that are triggered on the Input mapping context, simply adding or removing an InputMappingContext with no related key override with the bIgnoreAllPressedKeysUntilRelease option will caus ...

Blueprint - Crash when a function takes an event as a parameter

UE - Gameplay - Blueprint - Oct 10, 2016

Looks like maybe we aren't replacing the source delegate function (SignatureFunction) reference on the UDelegateProperty after recompiling the class - the function's owner name has the TRASHCLASS pr ...

[CrashReport] UE4Editor_ApplicationCore!FWindowsWindow::ReshapeWindow() [windowswindow.cpp:465]

Tools - Feb 17, 2018

No user comments in crash group 450 NewHeight = FMath::Max( NewHeight, FMath::Min( OldHeight, MinRetainedHeight ) ); 451 } 452 453 if (IsMaximized()) 454 ...

Crash in Standalone when using a Blueprint Library Function inside a Macro from a Macro Library

UE - Gameplay - Blueprint - Jan 9, 2015

Using a Function from a Blueprint Library inside a Macro from a Macro Library will cause a crash when using Standalone Game for PIE. The same setup will function as expected when Playing in Selected ...

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 ...

Launching a packaged game calling DownloadImage with -nullRHI option crashes

UE - Editor - UI Systems - Oct 8, 2020

When using nullrhi, the Texture->Resource variable in UAsyncTaskDownloadImage::HandleImageRequest is null and a crash occurs in WriteRawToTexture_RenderThread. ...

[CrashReport] UE4Editor_Landscape!ULandscapeComponent::ReallocateWeightmaps() [landscapeedit.cpp:4208]

UE - LD & Modeling - Terrain - Landscape - Nov 16, 2017

This is an infrequent but longstanding crash that has occurred since at least UE 4.12. User DescriptionsTrying to paint a landscape texture on a seemingly bugged out sector, which was stuck with th ...

Editor crash when shader debugging enabled including r.shaders.optimize=0

UE - Rendering Architecture - Shaders - Jun 23, 2024

The editor crashes when activating cvar options for shader compilation and debugging. ...

Crash on adding new element to ChaosCacheCollection if ChaosCacheCollection is open in editor

UE - Simulation - Physics - Destruction - Dec 11, 2020

More ways to reproduce:In Chaos Cache Collection Editor press Add Element button (no matter when you will do this step)If in Step13 from Steps to reproduce you won't place Chaos Cache Collection Edi ...

AppleARKit forces view projection matrix according to device viewport

UE - Platform - XR - Nov 5, 2024

[Link Removed] ...