Windows 10: this add-on causes Firefox to hang especially (when you lose focus, switch tabs), sometimes after a while the browser starts working, but more often not, you have to delete the process and start over again. In other browsers, a similar add-on does not cause problems. I've been using Firefox and StickyPassword for many years, but this problem interferes with my work. Removing this add-on solves the problem, you either have to manually open the database and copy passwords, or use another browser. It's better to switch to KeePassX then, the principle of operation is similar, although the addon in Firefox also works fine. StickyPassword - 8.4.4.920, Firefox - 100.0 64 bit.