Ensure exiting PIE after stepping into Blueprint Function Library

Ensure occurs when the user exits PIE after debugging a blueprint and stepping into a blueprint function library.

1. Open QAGame in editor.
2. Open the level TM-Nat_Function.
3. Open the blueprint BP_FunctionTest.
4. In the Event Graph, place a breakpoint on the Test Nat Lib Func node.
5. Play in viewport.
6. Press 1.
7. Keep pressing Step Into until BP_NativeFLib opens.
8. Exit PIE.

RESULT

Ensure.

Ensure condition failed: Lhs.CurrentNum == Lhs.InitialNum [Link Removed] [Line: 206]
Array has changed during ranged-for iteration!

UE4Editor-Core.dll!FWindowsPlatformStackWalk::StackWalkAndDump() [d:\framework\engine\source\runtime\core\private\windows\windowsplatformstackwalk.cpp:200]
UE4Editor-Core.dll!FDebug::EnsureFailed() [d:\framework\engine\source\runtime\core\private\misc\assertionmacros.cpp:316]
UE4Editor-Core.dll!FDebug::OptionallyLogFormattedEnsureMessageReturningFalse() [d:\framework\engine\source\runtime\core\private\misc\assertionmacros.cpp:447]
UE4Editor-UnrealEd.dll!UEditorEngine::Tick() [d:\framework\engine\source\editor\unrealed\private\editorengine.cpp:1591]
UE4Editor-UnrealEd.dll!UUnrealEdEngine::Tick() [d:\framework\engine\source\editor\unrealed\private\unrealedengine.cpp:401]
UE4Editor.exe!FEngineLoop::Tick() [d:\framework\engine\source\runtime\launch\private\launchengineloop.cpp:3301]
UE4Editor.exe!GuardedMain() [d:\framework\engine\source\runtime\launch\private\launch.cpp:166]
UE4Editor.exe!GuardedMainWrapper() [d:\framework\engine\source\runtime\launch\private\windows\launchwindows.cpp:134]
UE4Editor.exe!WinMain() [d:\framework\engine\source\runtime\launch\private\windows\launchwindows.cpp:210]
UE4Editor.exe!__scrt_common_main_seh() [f:\dd\vctools\crt\vcstartup\src\startup\exe_common.inl:253]
kernel32.dll!UnknownFunction []
ntdll.dll!UnknownFunction []