Unreal Engine Issues
Unreal Engine Issues
Map placed actor binding to another actor's Event Dispatcher (multicast delegate) results in duplicate bindings after blueprint recompile
UE - Framework - Blueprint - Apr 17, 2025Context Blueprint actors placed on the map can bind to another actor's event. If an ActorB has a reference to ActorA, it can bind to an event dispatcher in A by creating an event node in ActorB's e ...
Cloth paint update issues
UE - Simulation - Physics - Jan 7, 2020Activating and Deactivating Cloth Paint marks the skeletal mesh as dirty, even if no values were painted and there is no transaction in the Undo History. Painting Max Distance values from non-zero ...
[CrashReport] Linux crash - error VK_ERROR_EXTENSION_NOT_PRESENT
UE - Platform - Linux - Oct 27, 2017This is an early trending Linux crash in 4.18, but also occurred in 4.17. It seems to occur before a project loads. Callstack from Log[2017.10.26-01.39.08:606][ 0]LogVulkanRHI: Display: - Found g ...
Cook Warning "Saving FText which has been initialized from FString" when a user-defined BP structure contains a native C++ struct with an FText
UE - Framework - Blueprint - Sep 23, 2025Consider a C++ struct containing an FText. Now consider a used-defined BP structure containing that C++ struct. When cooking an asset that references such a user-defined BP structure, the following ...
Undo function breaks local variables in Blueprint Function after compiling
UE - Gameplay - Oct 8, 2020Blueprint functions appear to correctly associate local variables when renaming the function. However when undoing a rename with ctrl-z the local variables appear to lose their association. Redoing ...
Consolidate tool fails to replace unloaded references to Material Instances
Tools - Feb 20, 2018This issue is not a regression, it has been broken since the start of UE4. This bug may be related to [Link Removed] . Per licensee: We are trying to replace certain materials with material instan ...
C++ Class Creation Wizard does not setup include path properly when using a sub-directory with Public/Private Classes
Tools - May 7, 2020The creation wizard is not correctly adding the #include path in the CPP file. To fix the issue to get the project to compile you have to add the path in the .CPP file within Visual Studio. In this ...
[CrashReport] UE4Editor-UnrealEd.dylib!TBaseUObjectMethodDelegateInstance<false, UEditorEngine, TTypeWrapper<void> ()>::Execute()
UE - Platform - Apple - Nov 10, 2017This is a longstanding but low frequency Mac crash. Users have not provided any descriptions of their actions when the crash occurred. Callstack from Log[2017.10.26-22.22.57:828][183]LogSavePackag ...
[CrashReport] UE4Editor_Renderer!FUniformMeshConverter::Convert()
UE - Graphics Features - Aug 3, 2017This is a regular crash that has occurred through 4.16 and into the 4.17 previews. The callstack is similar to [Link Removed] (invalid), although the error message is different. User Description ...
[CrashReport] UE4Editor_Persona!<lambda_e529d88d0657fbede17be1535bc6d479>::operator() [blendspacedetails.cpp:29]
OLD - Anim - Aug 14, 2017This is a trending crash coming out of the 4.17 release. Users have not provided any descriptions of their actions when the crash occurred. The callstack is very close to https://jira.it.epicgames ...