In IE11, when clicking anywhere in the treegrid that is not visible on the screen without scrolling, the page jumps back to the top. This is especially a problem when one of the nodes in the tree grid is a hyperlink as the grid jumps to the top instead of navigating to the new page.
Actually, this is a web browser behavior. When an element gets the focus it auto-scrolls the page to it. This indeed is a behavior which some users do not like, but in general it’s something built-in the particular web browser. For now, we do not know whether this behavior can be prevented.