Thank you so much for reporting this. We ❤️ beta testers! I’m not a Firefox Developer Edition daily user, but I do test 1Password X on it. Does this happen on any site(s) in particular? We’d love to troubleshoot this with you. If you’re up for it, can you please send us an email with steps to reproduce the issue at support+x@1password.com so we can get to the bottom of this? Thank you!