The RU12 introduced an issue with IE10. When you have a SL app in an entity form and then click a left item in the nav menu, the SL app does not disappear, leaving it on the screen even though it's no longer in the HTML structure. If you then try to click on it it causes the browser screen to go white and will sometimes crash the browser.
Steps to replicate the issue:
- Open the account entity (or any entity) as an Administrator. - Click the Customize Tab at the top and then Form to start modifying the form. - Click the Insert Tab at the top and then insert a new Section by clicking One Column. - Click IFRAME in the Control section of the Insert tab. - Type a name for the IFRAME control and a URL that point to a Silverlight app. - Uncheck ‘Restrict cross-frame scripting’. - Click OK - Click the Home tab at the top and then click Save and Publish to publish the modifications. - Click all windows to go back to the list of Accounts (Or the entity you just modified) and re-open the entity record. - Once the form loaded, scroll to see the frame we just added and then click a link on the left pane like More Addresses to see the SL app not refreshing properly.