@Claude31 I'm looking for a method that doesn't rely on heuristics. I've currently got something working with a heuristic, but it has a lot of false positives. (I would provide code for my heuristic, but it only works for my specific case - not finding if the scroll bar is active in general)

Nope. Regular Buttons work, so I replaced literally all controls with imitations based off that element. Switches, Pickers, I even had to replace Sliders with +/- buttons. It's the worst solution, and the UI is way worse now. But it was at least thankfully not too much work for my app, and it made it functional again.

@michaelallenkelso That's what I'm using. It's not very clear!