How to stop windows from snapping to side and reducing size?

when my Firefox window is active on Macbook Air Sequoia 15.7.3 if I open a second app, calculator for example, the Firefox window reduces in size and snaps to the side of… (read more)

when my Firefox window is active on Macbook Air Sequoia 15.7.3 if I open a second app, calculator for example, the Firefox window reduces in size and snaps to the side of the screen. I want that behavior to stop. I want the calculator to overlay the full size Firefox window. How to achieve that?

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