Steps to reproduce:
Install any extension from the Firefox add-on page
Button still says "Add to Orion"
As soon as the extension is done installing the "Add to Orion" Button should either change to "Installed" or "Remove"
Orion, OS version; hardware type:
Version 0.99.109.1-beta (WebKit 613.1.12)
MacBook Pro 13" (2020, M1)