Question Anchors not being followed in children of children Canvas

Hey all.

My issue is that the direct children (circled in white and MuteButton in the screenshot) of Canvas are properly anchored to the left corner while the (grand) children (circled in yellow and located under MainMenuUI > SettingsButton) of the Canvas element don't properly respect the anchors as you can see in the image.

Is there any way for me to force indirect children of Canvas to respect the anchors and pivot?