Not a fan of the new look. If you’re in the same boat, plug:
about:config
into your URL bar, and search for:
browser.nova.enabled
Toggle it to false using the button to the right.
There are functional changes that Nova also introduced: this won’t effect those - only the aesthetic.
Meh.
I’m old. I miss the way Mozilla Suite and Netscape looked. The more of these “modern” trends that pass by the more they all look the same to me.
Thankfully Thunderbird is less affected by bullshit like this. As long as I can view my daily feed through RSS in table view, I’m happy.