There is no such thing as backwards compatible changes to button content If your form html is reasonably semantically structured, and/or you give meaningful ID

There is no such thing as backwards compatible changes to button content If your form html is reasonably semantically structured, and/or you give meaningful IDs to each interactive element, then your tests can be made somewhat robust against content changes. E.g. "click button #next-step" rather than "click the word Next". If your frontend is a desktop or mobile app, look for ways to introspect the widget hierarchy to do the same thing (I know this is possible in e.g. Swing).