Unreal Engine Issues and Bug Tracker (UE-52925)

Description

This is a common crash that has occurred since at least 4.14

User Descriptions

Was playing in editor and ran around my world composition level a little bit and then hit escape to quit.
Using the node 'Spawn Level Instance' twice on the same level
Loading twice the same level through Load Level Instance BP node
Spawning Multiple level instances through for loops
Trying to do a procedural random map generation with level streaming

Source Context

  242       void FLevelCollection::RemoveLevel(ULevel* const Level)
  243       {
  244       	if (Level)
  245       	{
  246       		check(Level->GetCachedLevelCollection() == this);
  247       		Level->SetCachedLevelCollection(nullptr);
  248 ***** 		Levels.Remove(Level);
  249       	}
  250       }

Steps to Reproduce

Download and extract this project: [Link Removed]
Open the project in editor.
Play in viewport
Exit PIE.

RESULT

Crash

Callstack

Assertion failed: Level->GetCachedLevelCollection() == this [File:D:\Build\++UE4+Release-4.18+Compile\Sync\Engine\Source\Runtime\Engine\Private\World.cpp] [Line: 247]

UE4Editor_Engine!FLevelCollection::RemoveLevel() [world.cpp:249]
UE4Editor_Engine!ULevelStreaming::SetLoadedLevel() [levelstreaming.cpp:378]
UE4Editor_Engine!UWorld::UpdateLevelStreamingInner() [world.cpp:2894]
UE4Editor_Engine!UWorld::UpdateLevelStreaming() [world.cpp:2918]
UE4Editor_Engine!UWorld::FlushLevelStreaming() [world.cpp:2961]
UE4Editor_UnrealEd!UEditorEngine::TeardownPlaySession() [playlevel.cpp:682]
UE4Editor_UnrealEd!UEditorEngine::EndPlayMap() [playlevel.cpp:323]
UE4Editor_UnrealEd!UEditorEngine::Tick() [editorengine.cpp:1917]
UE4Editor_UnrealEd!UUnrealEdEngine::Tick() [unrealedengine.cpp:396]
UE4Editor!FEngineLoop::Tick() [launchengineloop.cpp:3296]
UE4Editor!GuardedMain() [launch.cpp:166]
UE4Editor!GuardedMainWrapper() [launchwindows.cpp:134]
UE4Editor!WinMain() [launchwindows.cpp:210]
UE4Editor!__scrt_common_main_seh() [exe_common.inl:253]
kernel32!BaseThreadInitThunk()
ntdll!RtlUserThreadStart()

Community References

PIE crashes on stop play

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Fixed

Component	UE - Gameplay
Affects Versions	4.14, 4.15, 4.16, 4.17, 4.18, 4.18.2
Target Fix	4.19

Fix Commit	3794211
Main Commit	3804136
Release Commit	3813083

Created	Dec 1, 2017
Resolved	Dec 7, 2017
Updated	Jul 12, 2019

UE-52925

[CrashReport] UE4Editor_Engine!FLevelCollection::RemoveLevel() [world.cpp:249]

[CrashReport] UE4Editor_Engine!FLevelCollection::RemoveLevel() [world.cpp:249]

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