I often restore tabs and browser sessions using the Tab Session Manager addon, with lazy loading and the discarded property enabled. This loads tabs quickly with their favicons, but sometimes it fails to load certain tabs and loads new tab pages in their place instead which gets really frustrating. I could turn off the discarded property, but then it loads the page again and adds an entry to my browsing history which I don't want, it doesn't when the property is on. If I turn it off entirely then all the tabs would load, and too many at once would lag my computer. Sometimes though, Firefox just doesn't load favicons and I want to load them manually. I'd like a way to load the favicon for a tab without loading the whole page.