New bug in b10. Was happily using Safari Tech Preview in b9, not having (that many) problems with auto fill.
Updated to b10;
0 Launch Safari TP current version: Release 54 (Safari 11.2, WebKit 13606.1.13.2)
1 Go to website login page (like gab.ai/login)
2 Invoke hotkey to show 1P in browser....
1p7b10 now launches Safari. This is problematic because now I have 2 copies of Safari fighting over my keychain.
Same behavior as in b9, 1p UI coming up, me putting in master pass, then filling a login.
1Password Version: 7.0 b10
Extension Version: 7.0 BETA 10
OS Version: 10.13.4
Sync Type: Dropbox