Double check if not in edit mode?

[LukaszFiszerMJ]

private fun initialize() {
        if (!isInEditMode) {
            validators = ArrayList()
            this.post {
                if (!editText!!.isInEditMode)
                    initializeTextWatcher()
            }
        }
    }

Why do we need to check if editText is not in edit mode after w made sure layout is not. Is that possible that one of them is in edit mode and the other one is not?