Oh awesome. Significant pieces of 1Password 8 for Windows (like the sidebar) still aren't keyboard or screen reader accessible despite it being released... let's see... 2.5 years ago. It's good to know that yet another vendor clearly doesn't give a shit.
I've taken a slight break from other work to implement proper cross-object support for accessibility API text selection in Firefox. In practical terms, once Windows screen readers implement the necessary changes on their side, this means that screen reader users will be able to select text in browse mode and copy the text to the clipboard with rich formatting (links, headings, etc.), just as happens when sighted users copy with the mouse.