C8 Pro. Device in question is a VRMX1, using the community Leviton Z-Wave Plus Dimmer driver. Another instance of the model and driver works/displays fine. This one responds to commands from the web interface, dashboard interface. But the web interface always shows it's on at 28%. I can set the dim level to something different, turn it on/off, whatever. The dimmer does the right thing, but the GUI display doesn't change.
To make this abundantly clear: dimmer is on. Shows on in device info. I turn it off via device commands. Dimmer turns off. Device info still shows it on. This doesn't seem like a problem with the device reporting status, but something weird at the Hubitat. Not expecting it to change anything, I rebooted the C-8. No change.
I guess I can exclude/remove and re-include the device, and see if that changes anything. FWIW, I briefly saw something similar with a Zen 72 dimmer...it was on, device info showed it off, but that cleared up. This thing seems stubborn.