I go to a page where I am expected to log in (e.g., American Express). As the login window appears, I left button click on the 'username' prompt and Orion-RC properly suggests a stored set of credentials for that site. I click it and only the username fills in. No amount of re-clicking will load the password. Sometimes, if I reload the page, on the 2nd try everything works as you'd expect. I'm seeing this after the latest build and on many different sites where I have to log in.
Land on a site, signin window appears. left click on username and Orion prompts stored credentials. Click on credential and it loads into username and password boxes on login screen.
Version 1.0.4 (143.3-rc), WebKit 624.1.7
Tahoe (26)