I've been sticking with Firefox 56 until now because I couldn't live without the Panorama experience. Even though it's "Totally not Panorama", it seemed like it was close enough to bite the bullet and upgrade to 60.
I was confused about the tab hiding not working for a while, but once I'd read:
"Go to about:config and set extensions.webextensions.tabhide.enabled to true, then restart your browser."
in the developer's response to another review, life was suddenly good again.
