So true. It's really frustrating when UI overhauls are forced. I understand that with all the changes under the hood, they felt that this was the right time, but a tick-tock cycle is more user friendly and UI changes should be rolled out incrementally to avoid disrupting everyone's workflow. That said, after a few weeks I am happy with the new mobile firefox. The url bar on the bottom is actually easier for me to reach with one hand, which I do a lot. And it seems faster and more stable than before.