Tick function removed prematurely

Development Programming & Scripting
1

Steps to reproduce:

  1. Set Game Paused

  2. Spawn Widget Attached to view port

  3. Widget spawns Actor in constructor

    Actor Tick Properties are Tick even when paused and tick interval of 1/60 s

  4. Game Instance invokes remove all widgets

  5. Widget destruct is called. Do once → destroy spawned actor

This error occurs in PIE and standalone and will not occur if tick interval is 0

Stack Trace:

Assertion failed: bFound [File:D:\Build\++UE4+Release-4.18+Compile\Sync\Engine\Source\Runtime\Engine\Private\TickTaskManager.cpp] [Line: 1246]

UE4Editor_Core!FDebug::AssertFailed() [d:\build\++ue4+release-4.18+compile\sync\engine\source\runtime\core\private\misc\assertionmacros.cpp:414]
UE4Editor_Engine!FTickTaskLevel::RemoveTickFunction() [d:\build\++ue4+release-4.18+compile\sync\engine\source\runtime\engine\private\ticktaskmanager.cpp:1249]
UE4Editor_Engine!FTickFunction::UnRegisterTickFunction() [d:\build\++ue4+release-4.18+compile\sync\engine\source\runtime\engine\private\ticktaskmanager.cpp:1660]
UE4Editor_Engine!AActor::RegisterActorTickFunctions() [d:\build\++ue4+release-4.18+compile\sync\engine\source\runtime\engine\private\actor.cpp:765]
UE4Editor_Engine!AActor::RegisterAllActorTickFunctions() [d:\build\++ue4+release-4.18+compile\sync\engine\source\runtime\engine\private\actor.cpp:778]
UE4Editor_Engine!UWorld::DestroyActor() [d:\build\++ue4+release-4.18+compile\sync\engine\source\runtime\engine\private\levelactor.cpp:683]
UE4Editor_Engine!AActor::Destroy() [d:\build\++ue4+release-4.18+compile\sync\engine\source\runtime\engine\private\actor.cpp:3617]
UE4Editor_CoreUObject!UFunction::Invoke() [d:\build\++ue4+release-4.18+compile\sync\engine\source\runtime\coreuobject\private\uobject\class.cpp:4542]
UE4Editor_CoreUObject!UObject::CallFunction() [d:\build\++ue4+release-4.18+compile\sync\engine\source\runtime\coreuobject\private\uobject\scriptcore.cpp:732]
UE4Editor_CoreUObject!UObject::ProcessContextOpcode() [d:\build\++ue4+release-4.18+compile\sync\engine\source\runtime\coreuobject\private\uobject\scriptcore.cpp:2167]
UE4Editor_CoreUObject!UObject::ProcessInternal() [d:\build\++ue4+release-4.18+compile\sync\engine\source\runtime\coreuobject\private\uobject\scriptcore.cpp:954]
UE4Editor_CoreUObject!UObject::CallFunction() [d:\build\++ue4+release-4.18+compile\sync\engine\source\runtime\coreuobject\private\uobject\scriptcore.cpp:856]
UE4Editor_CoreUObject!UObject::ProcessInternal() [d:\build\++ue4+release-4.18+compile\sync\engine\source\runtime\coreuobject\private\uobject\scriptcore.cpp:954]
UE4Editor_CoreUObject!UFunction::Invoke() [d:\build\++ue4+release-4.18+compile\sync\engine\source\runtime\coreuobject\private\uobject\class.cpp:4542]
UE4Editor_CoreUObject!UObject::ProcessEvent() [d:\build\++ue4+release-4.18+compile\sync\engine\source\runtime\coreuobject\private\uobject\scriptcore.cpp:1314]
UE4Editor_UMG!SObjectWidget::ResetWidget() [d:\build\++ue4+release-4.18+compile\sync\engine\source\runtime\umg\private\slate\sobjectwidget.cpp:38]
UE4Editor_UMG!SharedPointerInternals::TIntrusiveReferenceController::DestroyObject() [d:\build\++ue4+release-4.18+compile\sync\engine\source\runtime\core\public\templates\sharedpointerinternals.h:145]
UE4Editor_SlateCore!FSlotBase::~FSlotBase() [d:\build\++ue4+release-4.18+compile\sync\engine\source\runtime\slatecore\private\slotbase.cpp:35]
UE4Editor_Slate!TIndirectArray::DestructAndFreeItems() [d:\build\++ue4+release-4.18+compile\sync\engine\source\runtime\core\public\containers\indirectarray.h:445]
UE4Editor_Slate!SConstraintCanvas::~SConstraintCanvas()
UE4Editor_SlateCore!TIndirectArray::DestructAndFreeItems() [d:\build\++ue4+release-4.18+compile\sync\engine\source\runtime\core\public\containers\indirectarray.h:444]
UE4Editor_SlateCore!TPanelChildren::Empty() [d:\build\++ue4+release-4.18+compile\sync\engine\source\runtime\slatecore\public\layout\children.h:260]
UE4Editor_Engine!UGameViewportClient::RemoveAllViewportWidgets() [d:\build\++ue4+release-4.18+compile\sync\engine\source\runtime\engine\private\gameviewportclient.cpp:2200]
UE4Editor_UMG!UWidgetLayoutLibrary::execRemoveAllWidgets() [d:\build\++ue4+release-4.18+compile\sync\engine\source\runtime\umg\public\blueprint\widgetlayoutlibrary.h:23]
UE4Editor_CoreUObject!UFunction::Invoke() [d:\build\++ue4+release-4.18+compile\sync\engine\source\runtime\coreuobject\private\uobject\class.cpp:4542]
UE4Editor_CoreUObject!UObject::CallFunction() [d:\build\++ue4+release-4.18+compile\sync\engine\source\runtime\coreuobject\private\uobject\scriptcore.cpp:732]
UE4Editor_CoreUObject!UObject::ProcessContextOpcode() [d:\build\++ue4+release-4.18+compile\sync\engine\source\runtime\coreuobject\private\uobject\scriptcore.cpp:2167]
UE4Editor_CoreUObject!UObject::ProcessInternal() [d:\build\++ue4+release-4.18+compile\sync\engine\source\runtime\coreuobject\private\uobject\scriptcore.cpp:954]
UE4Editor_CoreUObject!UObject::CallFunction() [d:\build\++ue4+release-4.18+compile\sync\engine\source\runtime\coreuobject\private\uobject\scriptcore.cpp:856]
UE4Editor_CoreUObject!UObject::ProcessInternal() [d:\build\++ue4+release-4.18+compile\sync\engine\source\runtime\coreuobject\private\uobject\scriptcore.cpp:954]
UE4Editor_CoreUObject!UObject::CallFunction() [d:\build\++ue4+release-4.18+compile\sync\engine\source\runtime\coreuobject\private\uobject\scriptcore.cpp:856]
UE4Editor_CoreUObject!UObject::ProcessContextOpcode() [d:\build\++ue4+release-4.18+compile\sync\engine\source\runtime\coreuobject\private\uobject\scriptcore.cpp:2167]
UE4Editor_CoreUObject!UObject::ProcessInternal() [d:\build\++ue4+release-4.18+compile\sync\engine\source\runtime\coreuobject\private\uobject\scriptcore.cpp:954]
UE4Editor_CoreUObject!UObject::CallFunction() [d:\build\++ue4+release-4.18+compile\sync\engine\source\runtime\coreuobject\private\uobject\scriptcore.cpp:856]
UE4Editor_CoreUObject!UObject::ProcessInternal() [d:\build\++ue4+release-4.18+compile\sync\engine\source\runtime\coreuobject\private\uobject\scriptcore.cpp:954]
UE4Editor_CoreUObject!UFunction::Invoke() [d:\build\++ue4+release-4.18+compile\sync\engine\source\runtime\coreuobject\private\uobject\class.cpp:4542]
UE4Editor_CoreUObject!UObject::ProcessEvent() [d:\build\++ue4+release-4.18+compile\sync\engine\source\runtime\coreuobject\private\uobject\scriptcore.cpp:1314]
UE4Editor_Engine!AActor::ProcessEvent() [d:\build\++ue4+release-4.18+compile\sync\engine\source\runtime\engine\private\actor.cpp:693]
UE4Editor_Engine!FInputActionHandlerDynamicSignature::Execute() [d:\build\++ue4+release-4.18+compile\sync\engine\source\runtime\engine\classes\components\inputcomponent.h:108]
UE4Editor_Engine!FInputActionUnifiedDelegate::Execute() [d:\build\++ue4+release-4.18+compile\sync\engine\source\runtime\engine\classes\components\inputcomponent.h:212]
UE4Editor_Engine!UPlayerInput::ProcessInputStack() [d:\build\++ue4+release-4.18+compile\sync\engine\source\runtime\engine\private\userinterface\playerinput.cpp:1225]
UE4Editor_Engine!APlayerController::ProcessPlayerInput() [d:\build\++ue4+release-4.18+compile\sync\engine\source\runtime\engine\private\playercontroller.cpp:2478]
UE4Editor_Engine!APlayerController::TickPlayerInput() [d:\build\++ue4+release-4.18+compile\sync\engine\source\runtime\engine\private\playercontroller.cpp:4229]
UE4Editor_Engine!APlayerController::TickActor() [d:\build\++ue4+release-4.18+compile\sync\engine\source\runtime\engine\private\playercontroller.cpp:4245]
UE4Editor_Engine!FActorTickFunction::ExecuteTick() [d:\build\++ue4+release-4.18+compile\sync\engine\source\runtime\engine\private\actor.cpp:132]
UE4Editor_Engine!FTickTaskLevel::RunPauseFrame() [d:\build\++ue4+release-4.18+compile\sync\engine\source\runtime\engine\private\ticktaskmanager.cpp:1054]
UE4Editor_Engine!FTickTaskManager::RunPauseFrame() [d:\build\++ue4+release-4.18+compile\sync\engine\source\runtime\engine\private\ticktaskmanager.cpp:1438]
UE4Editor_Engine!UWorld::Tick() [d:\build\++ue4+release-4.18+compile\sync\engine\source\runtime\engine\private\leveltick.cpp:1441]
UE4Editor_UnrealEd!UEditorEngine::Tick() [d:\build\++ue4+release-4.18+compile\sync\engine\source\editor\unrealed\private\editorengine.cpp:1659]
UE4Editor_UnrealEd!UUnrealEdEngine::Tick() [d:\build\++ue4+release-4.18+compile\sync\engine\source\editor\unrealed\private\unrealedengine.cpp:396]
UE4Editor!FEngineLoop::Tick() [d:\build\++ue4+release-4.18+compile\sync\engine\source\runtime\launch\private\launchengineloop.cpp:3296]
UE4Editor!GuardedMain() [d:\build\++ue4+release-4.18+compile\sync\engine\source\runtime\launch\private\launch.cpp:166]
UE4Editor!GuardedMainWrapper() [d:\build\++ue4+release-4.18+compile\sync\engine\source\runtime\launch\private\windows\launchwindows.cpp:134]
UE4Editor!WinMain() [d:\build\++ue4+release-4.18+compile\sync\engine\source\runtime\launch\private\windows\launchwindows.cpp:210]
UE4Editor!__scrt_common_main_seh() [f:\dd\vctools\crt\vcstartup\src\startup\exe_common.inl:253]
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