Is there anyway to get Firefox to warn me before closing a window? As in: Having ONLY one tab open will still require a prompt before closing. I have all 'warn on close' in my preferences set to true, and I'm guessing these only apply to multiple tabs, as that is the only time I receive a prompt. I have browser.startup.page set to 1.

This may not seem like a big issue, and really it isn't, but I have my browser setup to clear all data upon closing, and use various other privacy options and 2-factor authenticators make singing in, should I accidentally close my window, slightly annoying to have to go through. Especially when you need to attend a meeting or event at a specific time.