When adding devices to Hubitat, on this screen, the "Next >" should be set to disabled
in the UI to prevent the user from clicking multiple times:
When clicking on "Next >" presently, nothing visibly happens. The UI appears to hang for a second (or 2 or 10) while Hubitat is processing the driver in the background. This leads to wondering whether the click was registered or not, and if the user clicks multiple times, it creates multiple instances of the device:
Setting the button to disabled so it can't be clicked multiple times, and possibly also changing the text from "Next >" to something like "Wait..." would certainly be a quick improvement.