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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. Vicious_Cat069

    Nov 19, 2020 10:18

    Same here, 2019.4.12f1
    Just reinstalled - if I'd have come here first it would've saved me an hour!

  2. djpippin35

    Nov 19, 2020 06:43

    I'm running dual monitors Win10, on unity 2019.4.13f1 and getting the same issue. The problem I'm having now is not just the can't destroy editor, but it seems to have broke my project as well. Neither the factory reset or changing layouts is helping at all.

  3. wlwl2

    Nov 18, 2020 07:28

    Whilst you are fixing this, please do a check with dual monitors and Windows 10 if you can.

  4. caveDweller

    Nov 13, 2020 20:52

    I am getting this error on version 2020.1.12f1. Please advise the fix for this.

  5. DSam

    Nov 13, 2020 16:48

    This bug exactly as described is happing in the 4.14f as well. All the best.

  6. heretrash0

    Nov 12, 2020 22:11

    thank verygood!

  7. Sui42

    Nov 09, 2020 16:52

    I'm getting all of these issues, on any project (inluding new ones) with 2019.4.14f1

    When I boot up a Unity project, I also often get this message:

    The editor layout could not be fully loaded, this can happen when the layout contains EditorWindows not available in this project

  8. Buldermangg

    Nov 09, 2020 10:06

    Also this because of this i cant use first person camera without the mouse showing.

  9. Eater_Games

    Nov 09, 2020 02:07

    Unity 2019.4.14f1 LTS also has this issue

  10. Seith

    Nov 06, 2020 12:29

    That was fine in 2019.4.10f1. Point releases after that tend to have a surprising amount of issues (from errors to workflow-breaking bugs).

    Unity devs: I know you guys are doing what you can and I don't mean to come across as disrespectful but those are LTS releases. I'm not sure if you have problems with your testing or are maybe lacking people to take care of it in these crazy times but this is starting to be a problem.

    Please put more emphasis on very basic testing. It's not normal to find bugs in a LTS release 3mn after starting to use it.

    Thank you.

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