My suggestion would be to create a new thread about the backups not working. You started this thread about a charge and then black screen. That's where this entire thread has been focused. It's pretty much like saying my engine's not running on a car, then getting that fixed then saying, the problem's not fixed because now my left rear tire won't stay inflated.
Also you need to provide more information. i.e. "My backups aren't running after I installed IOS 9.2 on my ipad pro lte 128GB, wifi off, bluetooth off, siri off, hey siri off, airplane mode on, not signed into icloud, router is a netgear ws360, internet is time warner 1mbps..."
Just saying something like "My backups don't work" doesn't help anyone, and won't get any response from a company that's focused on hundreds of other things. I can guarantee that any developer that sees a statement without anything to help them replicate the problem or delve into the problem with some specific settings will just look at that and assume you've not set something up right, or don't know how to use the product...
Also the title of the thread that you started was:
Ipad Pro shuts off while charging and requires a hard reset to turn on
Pretty sure we can all say that this issue based on the title alone is now fixed with IOS 9.2. Those of us that have been helping troubleshoot this have run multiple tests utilizing tons of different settings to attempt to replicate the problem back onto IOS 9.2 without success, showing that IOS 9.2 does indeed fix the problem as outlined in the title of the thread.
I'm not saying you're not having a problem, just trying to point out that if you want help, you will get more by focusing a thread on that problem so others can find it via searching, news outlets can pick up on it via searching, and Apple will pick up on it by seeing it as a thread vs having to hunt through hundreds of messages in a thread that has nothing to do with that. The very first post that you started this thread with had nothing to do with backups failing, and the title has nothing about backups in it. That's all I'm saying. I definitely hope you can get that fixed, or that you can bring it to someone at Apple's attention, just do it in a way that brings visibility to it, and provide information to those people who could help you.