Prevent firefox from updating itself
Tabs will subsequently reappear below the search bar.
Presumably, the devs will alter or remove this option as well, so the better long term solution is probably to abandon Firefox altogether and use a browser that respects your privacy and doesn't force you to auto-update against your will.So, the steps followed were (am using Windows 10 64bit): About Firefox).In case that for any reason, Firefox upgrades itself again to v57, you can repeat the above procedure. Although I know that I will be left without updates for a while, my decision is to wait until all my critical add-ons and extensions are upgraded for v.57 (and all the "child diseases" of the new version are eliminated). Because it has attracted low-quality or spam answers that had to be removed, posting an answer now requires 10 reputation on this site (the association bonus does not count).Turns out that a lot of add-ons don't work anymore with 57.0, e.g.the session manager and the tab group add-on which I use extensively.