When I click in the Pointer tool to edit stuff, the icon highlights; and is indicated as being chosen in the app main menu, but it still stays in Browse mode. If I select a button's inspector, for instance, via the Application Browser, the button is selected, but still acts as a "runtime" button.
This problem started when I opened someone else's stack and copied the script (into the main stack scripting area); even quitting Rev and opening the stack again, it still acts the same. (I'm not blaming anyone else though

Luckily it's a small test only for an aspect of my main project, so it doesn't matter if I trash it. But just in case it happens again to something a bit more important, could anyone explain what's going on please and/or a way to repair the stack?