So, I was redirected here after posting a review of the Firefox app on the play store. This is honestly quite embarrassing for me, especially if it's because my problem is actually a simple mistake, but I assume it'll be worth it if I can get some help here. So not very long after I downloaded Firefox, I noticed that after some time (I can't actually pinpoint an exact time, unfortunately.), my private tabs will close, and I'll only have one that is not on any of the websites that I was on. I figured this was because my tab settings, but I checked multiple times, and I have the close tabs setting set to "never." (Close manually.) Is this an issue on my part, or is there potentially something wrong with the application or my phone? I apologize if this is a bit ridiculous, but I was also wondering how Firefox will notify me if I accidentally tap/click on a dangerous/suspicious link or website, do I get a visible warning on my screen? Or do I have to check to see if the connection is secure? (I use Google with Firefox.) If this was something I could've just looked up, then again, I apologize.