Description

Crash occurs when debugging blueprints when in a networked editor session.

Steps to Reproduce
  1. Open Content Examples in editor.
  2. Open the level Network_Features.
  3. Open the blueprint BP_GameMode_Network.
  4. Add a breakpoint to the Event OnPostLogin node.
  5. Back in the level editor, click the drop down next to Play.
  6. Set Number of Players to 2.
  7. Play in New Editor Window.
  8. When the breakpoint is triggered (should be immediate), repeatedly step through everything.

RESULT:

Crash will eventually occur.

Callstack
UE4Editor_UnrealEd!UEditorEngine::CreatePIEGameInstance() playlevel.cpp:3338 
UE4Editor_UnrealEd!UEditorEngine::SpawnIntraProcessPIEWorlds() playlevel.cpp:2579 
UE4Editor_UnrealEd!UEditorEngine::PlayInEditor() playlevel.cpp:2468 
UE4Editor_UnrealEd!UEditorEngine::StartQueuedPlayMapRequest() playlevel.cpp:1145 
UE4Editor_UnrealEd!UEditorEngine::Tick() editorengine.cpp:1310 
UE4Editor_UnrealEd!UUnrealEdEngine::Tick() unrealedengine.cpp:371 
UE4Editor!FEngineLoop::Tick() launchengineloop.cpp:2859 
UE4Editor!GuardedMain() launch.cpp:152 
UE4Editor!GuardedMainWrapper() launchwindows.cpp:126 
UE4Editor!WinMain() launchwindows.cpp:202 
UE4Editor!__scrt_common_main_seh() exe_common.inl:264 
kernel32!<Unknown> 
ntdll!<Unknown> 

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Fixed
ComponentTools
Affects Versions4.14
Target Fix4.14
Fix Commit3164737
Release Commit3164737
CreatedOct 14, 2016
ResolvedOct 17, 2016
UpdatedMay 2, 2018