Hey Brad, just to make sure you understand – this is an inconsistent issue. If the lock is “awake”, it responds to SmartThings Z-Wave commands without issue. The problem is if the lock has been sitting idle (somewhere between 15 minutes and two hours seems to be the cut-off point), then it just completely ignores ST and only responds to the August app.
Using the August app or manually turning the lock, though, will “wake” the device and it will respond to Z-Wave, again for a short time.
You’re correct, this is most likely a problem with August not following Z-Wave spec but maybe your team can help them figure it out.