User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:81.0) Gecko/20100101 Firefox/81.0
Steps to reproduce:
In local development, I have a state where due to a bug in my web server code, there's a loop between two web pages (an error page and the home page). So that's my problem. But in the meantime, I can't use the Firefox location bar to go to a URL that isn't reloading the error page and the home page every second. Every time I try to type in the 'login' part at the end of the URL to get out of the loop I'm interrupted by having the keyboard focus go to the beginning of the URL. I try to use keyboard to get to the end of the URL but as soon as the page reloads it goes back to the beginning of the URL so I can't fix the URL to escape the loop.
Now, granted, this isn't inescapable. I can kill the tab and start a new tab and NOT go to the URL that causes the URL loading bug. I can use the mouse, which for some reason doesn't suffer from the focus problem (but I normally don't use the mouse, I'm a very keyboard-oriented user).
The reason I'm reporting this and crossing my fingers that it's fixed is that I have other keyboard-only issues using the Firefox location bar, which are harder to reproduce. There's some other issue where I open a tab (keyboard only) and type in a URL or some search terms (keyboard only) and then I get stuck in the dropdown search results without being able to get back to the typing focus (unless I use a mouse) Maybe some attention to mouseless focus on the location bar would fix those issues that I have more trouble nailing down exactly how to reproduce!
While trying to edit the URL, since the web page is reloading while I'm trying to enter the correct URL, focus jumps to the beginning of the URL even though I'm trying to type at the end of the URL.
THe keyboard focus should have remained at the end of the URL since I put the keyboard focus there.