Unreal Engine Issues
Unreal Engine Issues
GAS: GameplayAttribute picker incorrectly also lists AttributeSets' non-attribute properties
UE - Gameplay - Gameplay Ability System - Aug 21, 2025Context: FGameplayAttribute's details customization lets designers pick any attribute property from any UAttributeSet class. Problem: This currently displays all properties of UAttributeSet class ...
Changing MaterialQualityLevel causes a crash due to a ShaderMap mismatch in UniformExpressionCache
UE - Rendering - Architecture - Materials - Nov 26, 2025A crash may occur when changing the MaterialQualitylevel via Scalability due to a race condition. The issue occurs because in ScalabilityCVarsSinkCallback(), when it creates the FGlobalComponentRec ...
Cones for angular constraints not visible is Separate Translucency is disabled
UE - Graphics Features - Apr 14, 2016A user reported an issue where the cones that represent angular constraints in the PHAT editor are not rendered if Separate Translucency is disabled. This may be related to another issue with Separa ...
Undoing pasting a component will crash ([CrashReport] UE4Editor_CoreUObject!FWeakObjectPtr::IsValid() [weakobjectptr.cpp:48])
UE - Gameplay - Components - Jul 20, 2017This is a common crash affecting users in 4.16. The callstack is similar to [Link Removed], which was fixed in 4.13. User DescriptionsAccidentally duplicated a blueprint with multiple static mesh ...
[CrashReport] UE4Editor_Kismet!FQuatRotationMatrix::FQuatRotationMatrix() [quatrotationtranslationmatrix.h:43]
UE - Gameplay - Aug 31, 2018User comment in crash group:Please Contact me to help fix this. I don't know what else to do. 41 FQuatRotationMatrix(const FQuat& Q) 42 ***** : FQuatRotationTranslationMatrix(Q, FVect ...
Does Container Match Tag Query Node doesn't find existing Gameplay Tags in Packaged Project with Nativized Blueprints
UE - Gameplay - Aug 26, 2019When using the "Does Container Match Tag Query" node doesn't return true when a gameplay container member has the searched for gameplay tag in a blueprint that has been nativized. Packaging in Excl ...
Web Remote Control Plugin missing from plugin window
Docs - Sep 13, 2019Remote Control Plugin missing from plugin window. If you follow the instructions on this page they don't work due to the missing plugin. Searching "Web Remote Control" also doesn't find the plugin. ...
Client crashes after second seamless travel when a blueprint manually placed in the world spawns a replicated actor
UE - Networking - Sep 19, 2019When a user loads into a level that spawns replicated actors using manually placed blueprints twice using ServerTravel with Seamless Travel enabled it will crash. It looks like the engine can't find ...
Vehicles with at least one kinematic collision do not function anymore
UE - Simulation - Physics - Oct 30, 2019Using at least one source of kinematic collision on a vehicle causes animations or movement to not function any longer. This issue persists on child bones and collisions as well. Users are unable to ...
Widget causing ensure to trigger on end play
UE - Editor - UI Systems - Nov 15, 2019Widget is causing an ensure to be hit when exiting gameplay. Tested in: 4.24 Preview2 CL#10091930 , 4.25 CL#10183780 Attached URL's from the user: https://forums.unrealengine.com/community/ge ...