Hello, Matthew,
Thank you for the request.
I made this request public, so the community can vote for the feature as this is how prioritize the requests.
Currently, a possible way to check this is to see the type of the nativeEvent as it will be `click` only when the spin buttons are clicked:
https://stackblitz.com/edit/react-afimm1?file=app/main.jsx
Regards,
Stefan
Progress Telerik