Dialogs that should be as high as possible are slightly too high on an iOS7 device, causing the footer with the main buttons to be cut off vertically (see first screen shot).

If this happens, you can actually scroll the screen up, which then gets stuck in that position (see second screen shot). The footer of the dialog then show up fully, albeit with a gray line in addition, but the header is then cut off. You have to tap on the status bar to get the browser to jump to the top of the page again to get back to the first situation mentioned above.

This is probably related to a similar problem the Favorites shell app has (see linked issue). Since the height available to a web page in Safari on iOS7 as changed, I assume that this is the root cause for the problem.

As all controls can still be used properly, I haven't marked this with a very high priority, but since it's visually apparent, it's still marked high.