No random reboots in the five months it has been in my possession. Touch wood!
But occasionally, I've seen battery percentage 'increase' by a percentage point or two, when the charger was at least a few meters away.
With respect to reboots, most of the M96's are golden.
Just the occasional bad tap is all that happens.
The full screen app seems to kill the service which controls system bar as well as the refresh. So unless Onyx/Booxstor change that behavior, there isn't much hope. The chances of that happening are slim though.
To counter that, I've contented myself with cropping as much as possible in briss & then using using k2pdfopt to split, rotate & convert to landscape mode. Then I just suffer the status bar in silence, since refresh, every 5-6 pages is of paramount importance.
Jp