Steps to reproduce:
1. Open attached project

Expected: it opens
Actual: it crashes while opening

Reproduced in: 2018.3.0a1, 2018.3.0a4
Not reproduced in: 2017.1.4p2, 2017.2.3p2, 2017.3.2f1, 2017.4.6f1, 2018.1.8f1, 2018.2.0f2,

Notes:
Have Windows/IL2CPP support installed before opening, without it Unity does not crash

Stack Trace:
0x0000000140E0BF64 (Unity) IterateTypeTree<RemapFromPrefabToInstancePPtr>
0x0000000140E0BFD3 (Unity) IterateTypeTree<RemapFromPrefabToInstancePPtr>
0x0000000140E0BFD3 (Unity) IterateTypeTree<RemapFromPrefabToInstancePPtr>
0x0000000140E0BFD3 (Unity) IterateTypeTree<RemapFromPrefabToInstancePPtr>
0x0000000140E0BFA9 (Unity) IterateTypeTree<RemapFromPrefabToInstancePPtr>
0x0000000140E0BFD3 (Unity) IterateTypeTree<RemapFromPrefabToInstancePPtr>
0x0000000140E0BFD3 (Unity) IterateTypeTree<RemapFromPrefabToInstancePPtr>
0x0000000140E0BFD3 (Unity) IterateTypeTree<RemapFromPrefabToInstancePPtr>
0x0000000140E0BFD3 (Unity) IterateTypeTree<RemapFromPrefabToInstancePPtr>
0x0000000140E0BFA9 (Unity) IterateTypeTree<RemapFromPrefabToInstancePPtr>
0x0000000140E0BFD3 (Unity) IterateTypeTree<RemapFromPrefabToInstancePPtr>
0x0000000140E0BFD3 (Unity) IterateTypeTree<RemapFromPrefabToInstancePPtr>
0x0000000140E0FA83 (Unity) ApplyPrefabStateAndPropertyModificationsToObjects
0x0000000140E156B3 (Unity) MergePrefabChanges
0x0000000140E048BE (Unity) MergePrefabInternal
0x0000000140E02D98 (Unity) MergeAllPrefabInstances
0x000000014098C446 (Unity) LoadSceneOperation::CompleteAwakeSequence
0x000000014098CFE4 (Unity) LoadSceneOperation::IntegrateMainThread
0x00000001409904CC (Unity) PreloadManager::UpdatePreloadingSingleStep
0x0000000140990E3A (Unity) PreloadManager::WaitForAllAsyncOperationsToComplete
0x0000000140E2C598 (Unity) EditorSceneManager::RestoreSceneBackups
0x0000000140E2C7EF (Unity) EditorSceneManager::RestoreSceneManagerSetup
0x0000000140E29AB5 (Unity) EditorSceneManager::LoadSceneManagerSetup
0x00000001412E533D (Unity) RestoreLastOpenedScenes
0x00000001412DADCC (Unity) Application::FinishLoadingProject
0x0000000141457D5B (Unity) WinMain
0x000000014241255A (Unity) __scrt_common_main_seh
0x00007FFC817F3034 (KERNEL32) BaseThreadInitThunk
0x00007FFC83E61431 (ntdll) RtlUserThreadStart