I just installed Safari Version 12.0 (13606.1.36.10.5) and 1Password 7 Version 7.2.BETA-1 (70200001) Beta in latest version of High Sierra, and now my keyboard shortcuts to show 1Password (cmd-opt-) and fill login (cmd-) no longer work, even on the forum website! I've restarted both Safari and 1Password with no effect and, yes, I enabled 1Password in the Safari extensions pane.
1Password Version:1Password 7 Version 7.2.BETA-1 (70200001) Beta
_Extension Version: Not Provided
OS Version:10.13.6 (17G65)
_Sync Type: Not Provided