XF.watchInputChangeDelayed only listens to keyup and paste events, which only fire for text inputs. It should probably also listen to paste and change events to support pasting, selects and radio inputs.
Thank you for reporting this issue, it has now been resolved. We are aiming to include any changes that have been made in a future XF release (2.3.0 Beta 6).
Change log:
Improve XF.watchInputChangeDelayed support for other input types by listening to the input event