Search Issue Tracker

Won't Fix



Found in


Issue ID




"Invalid editor window UnityEditor.FallbackEditorWindow" error when using 'Maximize On Play' with custom Editor windows



Steps to reproduce:
1) Open the attached project (
- Don't change the layout.
2) Enable 'Maximize On Play'.
3) Press Play.

An error appears in the Console:
Invalid editor window UnityEditor.FallbackEditorWindow

This does not occur when the layout is reset before entering play mode.

Reproduced on:
2018.1.0b1, 2017.2.1p1, 5.6.2f1, 5.2.3p3

Comments (4)

  1. CrazyFizik

    Nov 14, 2020 19:50

    this is still an issue with 2019.4.141

  2. imgalone

    Nov 02, 2020 15:36

    I am also having this issue but on my own separate project whenever I try to run the game with "maximize on play" on in unity 2019.4.12f1 lts

  3. Luis_Fernandes

    Oct 12, 2020 12:37

    this is still an issue with 2019.4.12f1

  4. Tymac

    Jul 13, 2020 01:11

    this is still an issue with 2019.4.1f1

Add comment

Log in to post comment

All about bugs

View bugs we have successfully reproduced, and vote for the bugs you want to see fixed most urgently.