When using a Sub Anim Instance node that uses an exposed variable and another exposed variable in the animation Blueprint that is set as the Instance Class in the Sub Anim Instance node, the editor crashes when played in standalone
-Occurs when the variables have different naming conventions
or
#Create a thirdperson project
Expected: Standalone does not crash
Results: Standalone crashes
LoginId:bdcd2df1437ec38ad0d19c85e30ff2d1 EpicAccountId:1ed52ca976af4368b6c30d11b7cdc18f Assertion failed: ((UObject*)ContainerPtr)->IsA((UClass*)GetOuter()) [File:D:\Build\++UE4+Release-4.19+Compile\Sync\Engine\Source\Runtime\CoreUObject\Public\UObject/UnrealType.h] [Line: 351] 'Default__ThirdPerson_AnimBP_C' is of class 'REINST_ThirdPerson_AnimBP_C_1' however property '__SUBINSTANCE_NewVar_0_9317C8284CF8D34BA3B83CBCBA860813' belongs to class 'TRASHCLASS_ThirdPerson_AnimBP_7' UE4Editor_Core!FDebug::AssertFailed() [d:\build\++ue4+release-4.19+compile\sync\engine\source\runtime\core\private\misc\assertionmacros.cpp:419] UE4Editor_Engine!FExposedValueHandler::Initialize() [d:\build\++ue4+release-4.19+compile\sync\engine\source\runtime\engine\private\animation\animnodebase.cpp:555] UE4Editor_Engine!UAnimInstance::PreInitializeRootNode() [d:\build\++ue4+release-4.19+compile\sync\engine\source\runtime\engine\private\animation\animinstance.cpp:2759] UE4Editor_CoreUObject!UObject::ConditionalPostLoad() [d:\build\++ue4+release-4.19+compile\sync\engine\source\runtime\coreuobject\private\uobject\obj.cpp:989] UE4Editor_CoreUObject!EndLoad() [d:\build\++ue4+release-4.19+compile\sync\engine\source\runtime\coreuobject\private\uobject\uobjectglobals.cpp:1595] UE4Editor_CoreUObject!LoadPackageInternal() [d:\build\++ue4+release-4.19+compile\sync\engine\source\runtime\coreuobject\private\uobject\uobjectglobals.cpp:1339] UE4Editor_CoreUObject!LoadPackage() [d:\build\++ue4+release-4.19+compile\sync\engine\source\runtime\coreuobject\private\uobject\uobjectglobals.cpp:1436] UE4Editor_Engine!UEngine::LoadMap() [d:\build\++ue4+release-4.19+compile\sync\engine\source\runtime\engine\private\unrealengine.cpp:10889] UE4Editor_Engine!UEngine::Browse() [d:\build\++ue4+release-4.19+compile\sync\engine\source\runtime\engine\private\unrealengine.cpp:10373] UE4Editor_Engine!UGameInstance::StartGameInstance() [d:\build\++ue4+release-4.19+compile\sync\engine\source\runtime\engine\private\gameinstance.cpp:440] UE4Editor!FEngineLoop::Init() [d:\build\++ue4+release-4.19+compile\sync\engine\source\runtime\launch\private\launchengineloop.cpp:2759] UE4Editor!GuardedMain() [d:\build\++ue4+release-4.19+compile\sync\engine\source\runtime\launch\private\launch.cpp:153] UE4Editor!GuardedMainWrapper() [d:\build\++ue4+release-4.19+compile\sync\engine\source\runtime\launch\private\windows\launchwindows.cpp:144] UE4Editor!WinMain() [d:\build\++ue4+release-4.19+compile\sync\engine\source\runtime\launch\private\windows\launchwindows.cpp:223] UE4Editor!__scrt_common_main_seh() [f:\dd\vctools\crt\vcstartup\src\startup\exe_common.inl:253] kernel32 ntdll
There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-59510 in the post.