Usability issues with new translation page as of today
Fragment of a discussion from Translation UX feedback
Well, you can revert to the old interface by putting "?tux=0" (or "&tux=0" if there is already a question mark in the URL) in the URL. For example: translatewiki.net/w/i.php?title=Special:Translate&group=core-0-mostused&tux=0.
PiRSquared17 (talk)