Unable to trigger HomeKit automation from Zen32 big button

Loving the HomeKit integration so far. I have a Zen32 scene controller and I can get HomeKit to response to the smaller buttons (1-4) but not the larger button (5).

I see the "button 5 pushed" event in the device's event log in Hubitat. To my naive eyes it looks the same as the event any of the other "button [1-4] pushed" events. I've tried changing the Smart Bulb Mode to various states but it didn't make a difference.

I don't see any logs from the Hubitat HomeKit app. How do I triage this?

Im having the exact same issue. Im new to Hubitat so I thought it was just something I did wrong. Glad to see Im not alone.