We are using version 2012.Q3 of Telerik, for the RadGrid control.

Once we updated to VS 2013 Update 2, we experienced a rendering problem on our development machines for all RadGrids on our site.

Upon further review we found out that this was due to the Browser Link feature in VS 2013. Browser Link appears to inject code between the development environment and the web server(s).

We were able to fix this upon finding an article pointing us towards the Browser Link feature. However it did take quite a while to figure out the issue, so we wanted to pass this along so that you could create a Knowledge Base article about this so that others can find the solution more easily and quickly.

Resolution:
Add the following item to the AppSettings section of the Web.config
<add key="vs:EnableBrowserLink" value="false" />

References:
http://weblogs.asp.net/imranbaloch/archive/2013/10/23/messy-html-and-js-errors-when-you-install-visual-studio-2013.aspx

http://stackoverflow.com/questions/19513631/radgrid-rendering-differently-in-different-machine-of-100-same-application-when

http://www.asp.net/visual-studio/overview/2013/using-browser-link 
(what is Browser Link)

I am using a user control to insert and update the data found in the MasterViewTable as well as other detail items bound in child tables not included in the grid.  How does one pass the key value to the user control.  I am new to Telerik but it shouldn't be this difficult.

When using the client-side resizeToFit() method of the RadGrid to automatically adjust a column's width it seems to cache the value (the computed width). If i alter on add contents to a column's header and then re-run resizeToFit() the column doesn't fit to the new contents.
I would like an option to reset the cache, maybe with an optional parameter to the resizeToFit() method.

I spend too much time hunting through the design time settings looking for a property settings. For example, your documentation indicates that I can produce a message to ask a user to confirm a row deletion when they click on a Delete button by adding some text to the ConfirmText property of the GridButtonColumn.  Where the heck is this?  I wish you would provide a "Search for this property or method" in you design control so that I could easily find the setting.   Same suggestion goes for all of your complex controls.  Thanks!

For the time being you can use the JavaScript workaround provided in the attachment.