The Apple Passwords extension (via Firefox addons) fails to operate correctly on Orion RC. It tells me that I need to be running macOS Sonoma or higher which I am. Switching to compatiblilty mode makes no difference. This extension operates correctly in the stable version of Orion.

I expect that the iCloud Password extension asks me to enter a 6-digit verification code.
Version 0.99.133.3-rc (WebKit 622.1.9.19.2)
Sequoia (15)