What OH version?
What types of devices?
What Operating System?
Any log errors that look significant?
What have you tried to troubleshoot?
What system status? Your OpenHAB server?
That’s normal of course. You just have to wait for them to wake up.
There are no “Device-State” accessible in openHAB. You can examine Thing status in rules. There’s probably a way to automate that by scanning for Things in a particular hierarchy.
Yes. You can of course still get a Thing status for sleeping devices. I doubt its of much use, but that’s what the OP wanted.
I’m assuming the Thing here stays offline after a reboot, until the first wake-up, and then shows online forever even when the device sleeps?
I’m not sure what you’d expect to gain from a list of “awaiting REQUEST_NIF” really. As I understand it, that is almost the permanent state of any battery zwave devices from OH viewpoint.
It shouldn’t be - once the device wakes up and moves past this stage, it will be something else. Unless you are restarting OH quite often, this should only be at this state until devices wake up after the restart.