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Fixed in 2019.4.X



Found in



Issue ID




An error is thrown when maximizing the Scene/Game view after changing the Layout of windows and re-opening the project

Scene/Game View


How to reproduce:
1. Create a new project
2. Change the Layout in the Editor by moving and docking windows to different places
3. Close and re-open the project
4. Maximize the Game view by pressing on the vertical ellipsis in the top right of the Game view and then pressing Maximize

Expected results: No errors are thrown
Actual results: The "Invalid editor window UnityEditor.FallbackEditorWindow" error is thrown in the Console

Reproducible with: 2019.4.12f1, 2019.4.14f1
Not reproducible with: 2018.4.28f1, 2019.4.11f1, 2020.1.0a1, 2020.1.11f1, 2020.2.0b9, 2021.1.0a3

- Entering the Play Mode while Maximize On Play is enabled will throw the error as well
- Resetting the Layout (by choosing any of the Layouts from the drop-down Layout list) will throw the "Failed to destroy editor windows: #1" error in the Console and will stop the other error from appearing when maximizing the Game view

  1. Resolution Note (fix version 2019.4):

    Fixed in 2019.4.15f1

Comments (21)

  1. wlwl2

    Oct 30, 2020 19:44

    Layout is causing a lot of warnings/errors with Unity 2019.4.x (I don't remember when it started) and only lasts for one session/is not persisting/you have to manually select a saved layout every time you open Unity. I am using 2019.4.13f right now.

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