[OBSOLETE] GE/Jasco Z-Wave Plus Dimmer Switch With Double-Tap

Has anyone else noticed that the buttons for double tap up and double tap down have stopped working using this DTH? Whenever I go into something like Smart Lighting to edit an automation using the double tap function (or add a new one) there is an error that reads the following from live logging (the app in both the classic and new just state that there is a network error):

java.lang.IllegalArgumentException: The JSON input text should neither be null nor empty. @line 1958 (supportedButtonValues)

Note that when I originally set these automations up, the buttons were exposed with no problem. I tried adjusting the refresh rate as noted above in this thread, but no help there. I have not performed the migration from the classic to the new app, but perhaps it has something to do with preparing for that change?

Any help would be greatly appreciated. Thanks!

Note, the buttons still work with WebCore and this is for both the dimmers and on/off switches:
prod:4952 model:3036 ver:5.20 (on/off)
prod:4944 model:3038 ver:5.26 (dimmer)