Version 75 of #Firefox removed an option to turn off a buggy behaviour of URL address bar which selected whole text after just one click, but without putting it into clipboard (contrary to expectations of users of #Unix -like systems). Now it’s possible to:
⒈ Click one time, selecting whole text (not copied).
⒉ Click two times fast, selecting single word (copied).
⒊ Click two times slowly, putting cursor at point.
⒋ Click three times, selecting whole text (copied).