Our stability is really our strongest feature. In fact, our customers use it as a monitoring tool.
TestRigor helps our customers to keep their tests stable just simply because testRigor executes tests emulating human interaction with a browser and testRigor does not rely on details of implementation like all other frameworks minuet details and how things are changing in HTML structure, XML structure or anything like that, do not affect the stability of the test whatsoever.
So no matter what happens in your XPath or selectors, tests are always stable. Now with the UI changes, we have some features that enable you to make changes really fast, and it groups arrows so that you spend minutes instead of days implementing those changes.