Be aware that in the circumstance you describe the tweaks that you make are auto saved, so if you are working on a project and change settings these are automatically saved, this is a different paradigm than when you manually save a project.
So, a good practice is to save a project manually when you are happy with it, then if you change settings (which will auto save) and decide that you do not want the changes then you can reload the project, and it will load the last manually saved state.