When tapping on a button with a touch monitor, it is registered as two inputs. There was an issue on win7 where touch inputs were counted as touches and clicks. This seems to be the same issue on win10 as well.
This is not a regression since it has been an issue in the past
Result: The print on the screen shows that the number of touches is 2
Expected Result: The print on the screen shows only one touch - similar to mouse click
There's no existing public thread on this issue, so head over toAnswerHub just mention UE-52800 in the post.