I have browser.messaging-system.whatsNewPanel.enabled set to "false". And yet when I update firefox, there's still a new tab opening telling me useless information. I don't want firefox to ever automatically open a new tab ever, for anything, ever. I don't care what's new, I don't care what changed, I just don't care. I want to permanently and completely disable firefox from opening a new tab to tell me literally anything. Please don't try to argue or convince me otherwise. It's such weird and rude behavior. Just please, how do I disable this feature that is annoying to me? Firefox should never be able to open a new tab on its own. Any tab openings should be done by user action.