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Fixed in Unity 2018.1



Found in


Issue ID




Crashes while undo changes after editing two scenes in Hierarchy Window and remove one without save

Scene/Game View



Priority: 7Not yet prioritized for a release


Severity: 1Crash or major loss of functionality

How to reproduce:
1. Create new project and create two scenes
2. Open both in the Hierarchy Window
3. Create an object in the first scene and drag it to the second
4. Remove the first scene and discard changes
5. Create one more object and press Ctrl + z until crash

Actual result: Unity crashes

Reproduced with: 5.5.4p3, 5.6.3p4, 2017.1.1p3, 2017.2.0f2, 2017.3.0b2

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