Before you can quickly switch between audit log and rule details when editing a rule. Precisely what you need when debugging a rule.
Now both are hidden inside the "..." menu. More clicks required and slower.
Also the Save and Discard buttons are always displayed at the top and enabled now. The Update button used to be disabled until there's an actual change.
Before when you make a change and doesn't click Update, you get a warning when you back out of the rule you are editing. Now it just go back without warning you about the unsaved changes.