Ahhh it’s so frustrating, I’ve spent a while trying to fix it and I think I’ve sort of diagnosed the issue. It seems that something on the page is messing the width up, so when I remove alerts + popups, the width works fine. Can’t seem to figure out which alert or popup it is though!
Edit: I resized alerts which seemed to fix most of the layout issues. In order to get the review section to match the width of the other content (which was too stretched), I grouped all the right-side content. Seems to have done the trick