Sometimes, my UIWebView will have a grey box over part or all of the content. I can\'t make heads or tails of why it\'s happening. It happens regularly for certain content.
All UIViews have a size limit of 1024x1024 pixels. This is stated at the end of the Overview section of the UIView documentation.
If your web view must have more than 1024px of content, you will have to take it out of the parent scroll view and let it manage scrolling on its own.