Steps to reproduce:
Cannot select languages by default, buttons on the page are clickable but have no response. If turn on the compatibility mode the site will work, but considering Google Translate is quite a major web app, I think it should be well supported in anyway.
Orion and macOS:
Orion Version 0.99.109.1.2-beta (WebKit 613.1.12)
macOS 12.1 (21C52)