Here’s how I just worked around this misfeature of the new app.
It turns out that the Simulated Presence Sensor (SPS) device does show up in the new app. Only the Mobile Presence device is hidden.
For nearly 5 years I’ve been using the Everyone’s Presense to set a SPS called Anyone Home to Present if, well, any of us are home. And that SPS device shows up in the new app!
I added another one just for me and now my presence shows up in the new app.
First, create the new SPS device using the IDE:
To add the SPS, open the IDE (account.smartthings.com), go to My Devices, click “+ New Device”.
Give it an appropriate name (“John Doe SimPresence”).
Give it a unique Device Net Id (I used “sim-presence-3”, since I already had 2 others).
Set the Type to “Simulated Presence Sensor”.
Set the Location as appropriate (“Home” for me).
Set the Hub as appropriate (“Home Hub” for me).
Hit “Create”.
Finally, add an instance of the Everyone’s Present SmartApp that simply uses the real John Doe’s phone presence to set the SPS presence you just created.
Repeat these two steps for everyone who’s presence you want to show up in the new app.