Good day All,

Hope you can help me.

I have an ASP.NET 4.0 Web app using Infragistics Netadvantage 11.2, SR 2141, with a web explorer bar that has a template that shows a radio button list of 10 items, used as a questionnaire. Each item template can be repeated more than once on the form due to it being a questionnaire. When the users use IE 8 WITHOUT compatibility mode, when clicking an item, it seems as if some unknown invisible markup is being added to the page (we do nothing client side on an item click, only when posting to the server), causing the page to widen. A particularly long questionnaire can lead to a very awkward looking page. When they activate compatibility mode, then this does not happen, but this is not the desired behaviour as it causes other issues. I can also confirm it does not happen when using IE 9 without compatibility mode, which is the desired effect. However, we need Ie 8 compatibility as some clients are still running Windows XP that does not support IE 9.

Anyone encountered this before or have some advice?