Autofill doesn't work with the form input's button, but works with extension Autofill (9to5mac.com)

Thank you kindly, steph_giles. I hope it can be addressed in a future update. The bug seems to be less frequent after it auto-populates / saves your email address: then 1P can fill in the password right via the form's button.

Ah, yes, that extension icon workaround, I did find it, too.

For the other issues: actually, they are all on the same URL.

1Password Modal does not pop up when selecting a form field.

Where: on 9to5mac.com, https://arstechnica.com/civis/login

1. Click the username field. 1P modal pops up with a matching login.
2. Ignore the 1P modal. Instead, click the 1P logo in the same username field.
3. Click the username field again. No 1P modal appears and does not appear even after clicking in / out of the field.
4. You must re-click the 1P icon in the form field a 2nd time, and then the 1P modal appears with the matching login.

1Password erroneously asks me to save a login, even though it's already saved

Where: on 9to5mac.com, https://arstechnica.com/civis/login

1. Click the username field. 1P modal pops up with a matching login.
2. Delete that login (e.g., if if you accidentally picked the wrong one or have hit the 9to5mac.com bug above or for any other reason).
3. Click the username field. 1P modal pops up with a matching login, but also with an erroneous "Save in 1Password" button.
4. If I click "Save in 1Password", it actually thinks I want to update that login (e.g., perhaps this should be worded "Update in 1Password".

This is what mine looks like:

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Perhaps these are two functions of 1P I don't understand yet. I believe the 2nd one, which I've just clicked now for the first time, is meant for password updating?