When attempting to create a menu with a target of popup links on a site's front end, links open as a new tab instead of a new window.

If a target is set for an href that has not already been opened, it opens in a new tab, not a new window.

Engineering has verified that this is how modern browsers function. It may be possible to set up a JavaScript onclick event to enter what options are desired for the link, such as what browser size and toolbars to have opened when the link is clicked.  The development of this code is outside of the scope of a support issue.