Double click in File Window also loaded a file on double-click at a directory. The operator for it was using a Macro mistakingly here. On any double click, it selected the item first and then executed load. By default, any double click action has to rely on the first click being properly handled before. Simply removing this macro, and assign the "exec operator" to the double-click event works as expected. A double click on a directory then just shows the dir (because the exec requires an 'active' file item).