Mobile Safari bug on fixed positioned button after scrollTop programmatically changed…?

Question

I\'m just about done a webpage but there is one bug in Mobile Safari (iPhone and iPad iOS 5.0.1) with two buttons that are fixed to the upper and lower right corners..

Answer 1

I discovered the exact behavior you describe in an iPhone app I'm writing. I load a bunch of HTML text with an index on the right side. After selecting an item from the menu and scrolling the text, the menu would then become unresponsive (because the landing zone had scrolled out from under it). I also saw that even a tiny scroll of the text would reenable the index menu.

I created a test case and uploaded the file here (If you view this on a non-iPhone browser, make the window small vertically to see the correct behavior):

http://www.misterpeachy.com/index_test.html

I figured out that the index menu was scrolling with the text (even though the visible menu didn't move) after I tapped B and then tapped B again. Instead of scrolling to B (basically not moving), it scrolled to D.

Right now I'm stuck. I'm hoping that I can add some JavaScript code (I've never programmed in JavaScript, so that is a slight problem) that will scroll the text one pixel after I lift my finger off a menu item (and after the text has scrolled to the selected place, of course). Maybe JavaScript can detect the scroll and then add another scroll to that.