non see through background behind UI

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So I have created an inventory UI and put it on my canvas. But when the inventory is active, there is just blue behind my UI. My health and mana bars are not affecting anything it is just the inventory. Maybe helpful information: canvas is set on “Constant Pixel Size”, but turning it to Scaling does not do anything. I am using a virtual camera from cinemaschine and my camera background is red so that is not the source. Here are the pictures.