tablet pro

I have problems with the buttons locking up ALL THE TIME, too.
Especially the alt-key is annoying but it simply locks up (if you pay attention to how it behaves when it is not working is simply that it doesn't register being pressed at all, simple as that)
In my opinion it is just programmed lously because if you have 2 buttons for the same function ( ALT-key for example) when the first button stops working the second one would still work.
So it has nothing to do with the system or hardware or anything else just that the program itself blocks the button from working correctly (does not register being pressed).
reloading the artistPad helps here, too. So i put a button for reloading it on the artistPad, unfortunately that button locks up from time to time, too. And so that still does not really help.
TabletPro tho actually nice is like it is now just annyoing to work with and i can not recommend anyone to buy it like that.
Especially when you consider that the devs haven't posted anything in this forum for months now.
For me it is useless like that. Every time i try it again i give up frustrated.

I wonder is there anyone out there for whom the buttons never lock up?
I have an lenovo yoga 730, and it happens all the time.
I can't work for a minute without being interrupted by non-working buttons.