Sorry. I guess popup is the wrong term here. I have a page in an MVC application that when a button is pressed, a JQGrid is displayed on top of the page. I am fetching data from my database then displaying it in the JQGrid. Since the data list is longer then the size of the JQGrid, I have a vertical scrollbar. The user is in IE11 with Windows 7 operating system, when the user clicks on the scroll bar, the mouse pointer locks to the JQGrid and it seems to be calling the drag event. This causes the JQGrid to drag wherever the mouse is moved. The only way to release the mouse from the JQGrid is to right click. This only happens in IE11 on Windows 7. The behavior does not happen in IE11 on Windows 8.