This user's project crashes when instanced levels and the player pawn are unloaded and destroyed

This user's project crashes when instanced levels and the player pawn are unloaded and destroyed. This occurs in the ProjectLevelGameMode Blueprint, in the Touched Finish Point commented area. This does NOT occur if the pawn is unpossessed and a short delay is implemented before destroying the pawn.

Project can be downloaded here:
[Link Removed]

Reproduced in 4.8.1 and Main (//depot/UE4/Promotable-CL-2598974)

Crash Report:
[Link Removed]

Call Stack:
UE4Editor_Engine!USceneComponent::`vftable'()
UE4Editor_Engine!APlayerController::GetAudioListenerPosition() playercontroller.cpp:2508
UE4Editor_Engine!UGameViewportClient::Draw() gameviewportclient.cpp:974
UE4Editor_Engine!FViewport::Draw() unrealclient.cpp:1001
UE4Editor_UnrealEd!UEditorEngine::Tick() editorengine.cpp:1515
UE4Editor_UnrealEd!UUnrealEdEngine::Tick() unrealedengine.cpp:366
UE4Editor!FEngineLoop::Tick() launchengineloop.cpp:2359
UE4Editor!GuardedMain() launch.cpp:142
UE4Editor!GuardedMainWrapper() launchwindows.cpp:126
UE4Editor!WinMain() launchwindows.cpp:200

1. Download the user's project
2. PIE
3. Set the "Dungeon Biome" to "Mansion" and hit Start
4. Run to the Finish line

Result:
Crash

[4.8.1] Crash when destroying pawn and unloading streaming level instance at same time