The first thing I turn off. It often interacts badly with many single-page we apps where a field loses focus when you remove its contents. Hit the backspace key

The first thing I turn off. It often interacts badly with many single-page we apps where a field loses focus when you remove its contents. Hit the backspace key one too many times, and you navigate back. Not all pages behave this way, but enough do that it's infuriating.