I am not sure if this is a browser/javascript issue or if it is a bug w/ jqwidgets. The problem I am currently having is when someone re-sizes the browser window to allow only a section of the grid to fit; for example, jqwidget demo, open the demo on a new window and re-size the window to only see Ship Name, Freight, and Ship Address, and few rows. In this scenario if a user scrolls down and tries to copy a cell value using keyboard shortcut the page jumps all the to the top.
I am currently encountering this issue using FireFox 24.2.0…Have not tried it on other browsers!