The statement was clearly that windows would get the positioning confused. Perhaps you're laboring under the misconception that everyone puts the close box in the same place? (This is false, by the way).
From where I sit, nearly every prefab environments gets the window decorations quite wrong, by putting destructive, unrecoverable decoration buttons directly adjacent to nondestructive, recoverable buttons.
For example, nearly everyone puts close adjacent to things like minimize, so an attempted minimize can lose your work.
I'm certainly not going to accept an environment that allows the app developer to inflict this kind of stupidity on me.