I've installed Firefox (version 118.0 (34465)) on my iPhone 13, but it has an annoying quirk which I'm hoping can be stopped in Settings. When I open the Firefox app, it opens all the pages I hadn't previously closed, but adds a new homepage. When the app is open in the background and I make it active, it adds a new homepage. This is annoying, because if I change between Firefox and any other app several times, it adds a new homepage and makes it active. Is there a setting to prevent this, please, because I can't find it. It doesn't do this in Firefox on my iMac. Thank you.