Saving a bookmark to a specific folder has never worked in Firefox. Never! Add bookmark > Location > Choose > search the specific folder > the scrollbar does not move down! You can search (browse) the specific folder with the scroll wheel of the mouse, with the arrow key of the keyboard, you can slide the scrollbar up and down with the *very small* arrows on the scrollbar, but you cannot slide the scrollbar with the most essential and easiest way by moving it up and down with the mouse. By that I mean: clicking the scrollbar with the left mouse button and move it down and up. THIS HAS NEVER WORKED IN FIREFOX. It works just randomly. Sometimes very rarely it works, usually it doesn't work. Why is that? Firefox 147, Windows 11.