Hi. I'm running IOS 7.01 on a 5S. Popup buttons are not behaving properly, either within one particular app and on Safari. When I double tap the popup button to enter my credit card info, for instance, or to select a category on the BARD website, I cannot advance or go beyond the next or earlier item in the popup. So, in the expiration date, I'm only able to advance to February when starting with January, and only to the second category in a list. After many tries within a transportation ticket-buying app, I managed to flick away from the popup button and flick back to it at least half a dozen times and managed to get to March by flicking up. Has anyone else experienced this difficulty with popup buttons?