Noting, even were we to fix syncing issues, this would leave items 2a., 3a. and 3c. outstanding.

2b. followup

I set desktop keyboard shortcut to Command + . and forms now fill correctly.

Granted, this is still not ideal, as I’d prefer to use Command + \. On that note, what’s most frustrating is that Command + \ wasn’t my convention—it’s one I learned to use from 1Password.