Switching to and from the app.fastmail.com tab is extremely slow. Interacting with the app in the browser is very slow.
Switching to the tab from any other active tab takes 2-3 seconds after clicking the tab. Interacting with buttons on the website is similarly slow.
The app works as in the previous version of orion.
Version 0.99.130-beta (WebKit 621.1.2.111.4)
Sequoia (15)