This is a long-standing problem for the whole software industry that is largely unsolved: real separation between the user interface and other logic. In order to stay on yesterday’s (better) UI, you need to stay on yesterday’s software version, foregoing critical security and performance improvements, or rely on nasty third party hacks to bring the old UI back to the new software.

I know a lot of people who deliberately do not update their software unless forced to, because designers/developers cannot resist the urge to redo the UI every year, pointlessly moving things around and changing everything.