i am also experiencing this problem, just after upgrading to 4.3.
on 4.2 it never happened to me.
Maybe on 4.2 you didn't know how to reproduce it but if you want to know my touch screen get worse after upgrade to .290 so you are not the only one.
i don't have any other touch screen issue other than the zooming instead of scrolling thing. never experienced any issue on 4.2
It's the same. Touch screen do not recognize the movement of the finger but it do like you will just touch it one time, touch screen problem. Had problem even on scrolling pages.
BTW @eclyptos did you got your phone back?
Not yet, by the end of January I will know something.
Just leave us a message here on what will be the outcome of the repair. I'm losing hope here..
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