The Lumia 1520 is in many ways the perfect Windows Phone assuming, of course, that you are okay with a 6-inch display. However, if there is one Achilles Heel that only occasionally rears its head it is the 'scroll/tap' issue. Although more a nuisance than anything, the bug randomly occurs when scrolling on the display using a swipe, but instead the device registers it as a 'tap.' This hardware "misreading" results in the phone opening links, tweets, photos, or hyperlinks when the user only intended to scroll up or down.
Ever since the Lumia 1520 started exhibited this problem, it was largely assumed to be a software (firmware) problem, or a screen-calibration tweak. The randomness of the bug and subsequent software releases though calls this explanation into question. Even more, some users have it and others do not.
Now, a new theory grounded in the hardware of the device appears to go a long way in explaining the problem and even how to solve it.