After clicking RMB on any site, the tab opens the regular menu, but it does not close if you click LMB outside this menu. The same thing happens when you open the firefox menu, until you select an item or press ESC, it will not close. What could be the problem?

PS. image: I clicked RMB and click LMB outside this menu, but it does not disappear. It will disappear if you select a menu item or press ESC. The browser does not freeze, all the browser menus freeze.