I just installed two Z-wave contact sensors and they send battery, open, and closed correctly, but for some reason, the closed never registers as an event. I tested before installing yesterday, and you can see open/close working fine. Then they registered an open and the driver seems to be ignoring the closed state. Very weird. See logs and events...
I'm having the same issue & "fixed" it by changing it to the "Ring Alarm Contact Sensor" (V1) driver. I feel like this shouldn't be an issue. Did the issue become recurring to you? If this is recurring, I'm going to change the devices out...