How do I disable form autosubmit?

My guess is that many, or even most, of the people posting in this thread are using Safari. After doing some digging, it looks like this is a combination of a few different issues.

1. As discussed in https://1password.community/discussion/129350/since-upgrading-to-1pw8-1pw-safari-extension-no-longer-works-or-even-exists, for some reason part of the Safari extension often doesn't get registered correctly in the system. Anecdotally, it often seems to un-register during a browsing session, requiring me to run lsregister -f -R /Applications/Safari.app or sometimes even lsregister -f -R /Applications/1Password\ for\ Safari.app even when it worked just moments earlier.
2. The keyboard shortcuts for the new Safari extension https://1password.community/discussion/129706/prevent-1password-safari-extension-from-using-command-shift-x. As such, it responds to Cmd+Shift+X and not Cmd+\.
3. 1Password's new global autofill functionality likes to be helpful. As a result, pressing Cmd+\ is caught by 1Password and https://1password.community/discussion/129376/1password-for-safari-extension-animated-slow-filling.

To break it down further, something along these lines is happening:

1. User presses Cmd+\
2. 1Password app intercepts the shortcut
3. 1Password app determines that the active app is Safari, identifies active site
4. User selects which login item to use
5. (Unconfirmed speculation on my part) 1Password app attempts to communicate this with Safari extension, but fails
6. 1Password app, falling back to global autofill, injects keystrokes of the username, tab, the password, and return