Background.png messing up with GameScene’s didChangeSize(…)

Here is a snapshot of my GameScene.sks with the Xcode Inspector showing on the right side:

Here is a 2nd snapshot of the room with the Inspector still showing:

As you can see, I have set the size of the parent Scene and its room sibling to the same size with this spec in my showScene():

let ourScene = GameScene(fileNamed: "GameScene")!
ourScene.scaleMode = .resizeFill

1st, here’s the room which displays an OH-OH with rotation of the GameScene:

Here are 2 more pics that displays this OH-OH =

BEFORE:

AFTER:

For those who are curious, the above OH-OH occurs even if there is zero code within didChangeSize(..)

In light of that observation, I have initially concluded that there are some errors in my Xcode Inspector snapshots above.

Appreciate your patiently going thru this lengthy problem description.