I do NOT like -at all- the new font and spacing setup in 89. Please let us go back to what it was.

It's a nightmare. Here's the posted "fix". Fingers crossed they don't tear this option away from us. Good luck!

(1) In a new tab, type or paste about:config in the address bar and press Enter/Return. Click the button accepting the risk.

(2) In the search box in the page, type or paste browser.proton.enabled and pause while the list is filtered

(3) Double-click the preference to switch between true (new design) and false (old design)

In about:config

"browser.proton.enabled" to "false"

Then all "browser.proton" to "false"

That helped.

that option is going in update 90 , so the ugly look will be back , the look that looks like all the other browsers out there at the moment