The updates to the Nexus 7 2013 have been a mixed blessing. The first update, which shows up right away, causes the glitches with the touchscreen. A new update fixes or reverses the previous patch, although some oversensitive clicking still exists. Hopefully they will continue to refine the device. I suspect 1080p makes for some interesting changes from 720p optimized code.
Now that the device has a screen protector I have had a more consistent experience, but find I have to add some extra pressure to register a press. I think I was spoiled by the N7 2012, nonetheless I an disappointed, and hope Google has a fix for it coming along with KitKat (Android 4.4) in the next couple of weeks. The tablet thankfully is still functional, just not up to par with the first iteration when it comes to the screen.