Thanks for the thread.
I have the same issue mentioned above and can confirm that I have "never" rooted my new Nexus 7, so this is not likely the cause.
Also, the previous poster found that a full factory reset did not sort the issue, so thanks for this and now I won't lose time trying a reset.
Also, the previous poster pulled a full stock image from Google, which fixed his issue. Therefore, this might imply that the JSS15R incremental [I believe all updates so far for this devices were incremental] does not apply properly [in some or all cases]? and/or some bits were left out of the incremental? Or some errors were encountered while applying the incremental? Logs somewhere?
So, any idea when / if a full image will be rolled out from Google for the Nexus 7 (2013)? Never?
I suppose this is only thing good about the ~200 MB "full" CyanogenMod (CM) 10.2 nightly images I put on my SGS III [no incremental issues].
After owning this tablet for 2 months, I as still hoping for stability and have resisted "rooting it" or "ROMming it" in case I need to send to ASUS against the 1 year USA warranty [purchased from Best Buy in USA - April 2013 manufacture date]. Now in London, UK, so no easy way to return it to Best Buy or ASUS USA.
BTW, my first purchase of this problematic tablet was returned to Google (Play Store) in early August 2013. Most of the sensors did NOT work.
A bit off topic, but I wonder how well CM 10.2 would behave on this tablet? since even the core Android 4.3 software from Google [which CM is based on] is "still" struggling with issues 3 months after launch for so many Nexus 7 (2013) users.
If I have to wipe the device and install a full JSS15R ROM, then I am open to putting a different ROM like CM.