Unreal Engine Issues
Unreal Engine Issues
Divergent group barriers in Lumen
UE - Graphics Features - Lumen - Apr 23, 2025Intel reported GPU crashes on their hardware caused by divergent group barriers in ScreenProbeConvertToIrradianceCS:[numthreads(THREADGROUP_SIZE, THREADGROUP_SIZE, 1)] void ScreenProbeConvertToIrra ...
Crash occurs when typing 'Debug Crash' in console
UE - QA - Training - Feb 10, 2022Once UE is launched and console is accessed, typing down 'Debug Crash' will close the engine and open the Crash Reporter window. 'Debug Crash' is not a recognized command from the list.REGRESION: No ...
Correct Morph Targets animate in PIE, but not in Standalone Game
OLD - Anim - Mar 5, 2015Wrong morph targets are animating in standalone game, but the right ones play in PIE See the Additional Info URL for the user's description (and youtube video) Here is the project: [Link Removed] ...
Client Characters that slide past the Server Character while on top of a Movable Actor can become de-synchronized from their Server counterpart
UE - Networking - Sep 9, 2015Client Characters that slide past the Server Character while on top of a Movable Actor can become de-synchronized from their Server counterpart. Does not occur on top of Static Actors. Hard to expl ...
GAS: FGameplayEffectCustomExecutionParameters constructor generates a new FActiveGameplayEffectHandle that is not removed from a global static map until map change
UE - Gameplay - Gameplay Ability System - Aug 23, 2023Created based on user report. The constructor of FGameplayEffectCustomExecutionParameters generates a FActiveGameplayEffectHandle that gets put in GlobalActiveGameplayEffectHandles::Map and stays t ...
Montage Section Links Don't Update When Section Deleted
UE - Anim - Gameplay - Mar 21, 2025Hi there, I noticed that there is a problem with Montage Section links not updating when a section is deleted from a montage asset. We had a montage with a "Default" section and a "Loop" section. ...
Crash Occurs when changing the 'Max Metal Shader Standard To Target' option within iOS Project Settings
UE - Platform - Mobile - Jan 26, 2017A crash occurs when setting the Max Metal Standard Shader version within the Project Settings for iOS. I tested on both Mac and PC and the crash occurs on both machines. Regression? No, this is not ...
[CrashReport] UE4Editor-CoreUObject!UStruct::SerializeVersionedTaggedProperties(FStructuredArchiveSlot,unsigned char *,UStruct *,unsigned char *,UObject const *) [Class.cpp:1478]
UE - Gameplay - Blueprint - May 22, 2020User comment: "Crash at compile array blueprint" Error MessageAssertion failed: Tag.Size == Loaded [File:D:/Build/++UE4+Licensee/Sync/Engine/Source/Runtime/CoreUObject/Private/UObject/Class.cpp] [L ...
Adding material to tiled landscape via details pane causes editor to crash
UE - LD & Modeling - Terrain - Landscape - Jun 22, 2015If a material is added to a tiled landscape via the details pane, the editor crashes. Frequency: 3/3 CrashReporter: [Link Removed] ...
Second UVs wiped when using Merge Actors Tool
UE - World Creation - Worldbuilding Tools - HLOD - Jan 26, 2017The merge actor tool no longer saves additional UVs used for the merged mesh. This was not the case in 4.13, but in 4.14 and later this information is no longer present. Also worth noting is that i ...