I tried this approach with CoRE and just refresh every 10 minutes because I thought that was the only issue and I could at least get notifications when left open again, but that wasn’t working.
The garage door still triggers “Home Arrival” events and opens, but MyQ app just can’t seem to sense when it’s left open, get it’s status at all. So tilt sensor would be definitely the way to go. I think I’ll order one up now!!!