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Not Reproducible
Votes
1
Found in
2017.3.0a6
2018.2.0a1
2018.3.0a1
2018.3.0b5
2019.1.0a1
Issue ID
1089930
Regression
No
Prefab can't be deleted, when Prefab size is too large to create an Undo Object
Steps to reproduce:
1. Open the "Pumping Plant Level" Unity Project
2. Start the "CANNOT DELETE PUMPING STATION" scene
3. Delete the Prefab "Pumping Station"
4. Save the Scene
5. Reopen the same Scene by double clicking on it in the Hierarchy
Expected result: Prefab is deleted from the Hierarchy
Actual result: Prefab reappears in the Hierarchy after reopening the Scene
Reproducible with: 2017.4.17f1, 2018.2.19f1, 2018.3.0f1, 2019.1.0a11
Note: this is related to Unity not being able to create an Undo Object. If all other programs are closed (memory is not overloaded) it is possible to delete a large Prefab like this. Because of the memory limitations, having such a big Prefab Asset will sometimes cause a crash on loading the Project in Unity Releases 2017.4-2018.2.
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