To better control my browsing history and what sites are allowed to leave behind cookies, I primarily use private windows when I browse. I've used private windows in this manner for years, I find them quite useful, however, this means when I accidentally hit that big X at the top right corner, I have nothing but my horrible memory to rely on in trying to restore some of what was rather suddenly lost. For years I've had Firefox ask before closing windows with multiple tabs, a feature I've found quite useful. Is there any way I can set Firefox behave the same towards private windows? Please don't respond with the obvious "just stop using private windows". Were that to be a worthy solution, I wouldn't be asking this. I'm not about to sacrifice the benefits of private windows that motivated me to use them in the first place, I just wanna know if I can prevent the consequential loss of tabs I've experienced from it. (p.s. I've now twice typed this question out in private windows before accidentally closing them, first trying to open the menu to double check my browser version, and second by hitting CTRL-W) Thank you all, and I hope you have a wonderful day.