Hi all,
I have been dealing with this one very annoying error that keeps poping up CONSTANTLY… It is driving me crazy…
The error is:
Invalid editor window of type: UnityEditor.FallbackEditorWindow, title: Failed to load
UnityEditor.EditorApplicationLayout:FinalizePlaymodeLayout ()
I am sure many have gotten the same error as well. I know how to fix it, you just reset the layout back to default, but it is so annoying because I constantly have to re-do my preferred layout after resetting it. If I save my layout and after resetting it I load it back again, I again get the same error soon after.
This is clearly some bug in Unity.
When this error pops up I can’t enter normally into the play mode I am essentially forced to reset the whole editor layout. 
This is extremely frustrating.