Problem with Table in a Liferay portlet

Hi,
I have a Liferay portlet containing a selectable Table .
If the table is at the bottom of the page and you have to scroll down (the window is smaller then the page), clicking on a table row causes the page to scroll to the top.

This is happening in liferay 6.1 with any version of vaadin (I tested with version 6.8.4 to 6.8.13 ant vaadin 7) but only with chrome 32.0.1700.107 m on Windows.
I tested with Firefox and older versions of Chrome and it works fine.