Side-Menu is automatically shown on certain pages

I’ve noticed that on my 1366x768 laptop screen that the side menu appears on certain pages but not on others. This issue has only arisen recently, I find it a problem since there’s a lack of consistency between the pages.

You’ll notice there is no menu button on the second image.

Its as if they minimise it so an advert can be displayed in its spot on the home page.

Something about it feels intentional.

I find it only pops out on me on old pages, newly designed pages such as the games page and the home page hide the side bar. (still angers me that I’m only 8 pixels short of the horizontal cutoff of 1688)