By default, in data analysis views clicking an action menu link loads the new resource in the same tab.
If one prefers to have WATS open its links in new tabs instead, it can be done in My settings -> Reporting settings -> Drilldown options -> “open in new browser tab”.
In rare cases, with the default drilldown option “redirect current tab”, when browser "back" and "forth" buttons have been in use, WATS might cease to properly load some views upon clicking on graph elements, i.e. in periodic yield view (see picture below). This behavior is awaiting a permanent fix, but in the meantime, changing the drilldown option to open action menu’s links in new tabs will fix the issue.