Yes, and that can be useful. However, if you use the back button to return to a previous URL it doesn't appear to update the settings from the URL. This means you can't use the back button as an Undo button.
Agree - I'd much prefer an "undo/redo" button inside the app, instead of flooding my history state. They can change the URL all they want (for linkability) but leave my damn history alone!
