This hasn't changed, as far as I know. The flightlines that are displayed when moving or stretching are nothing to do with the display of incomplete nets in the Annotation Browser.
When you are Moving or Stretching, the F3 options form has a "Display Draglines" option, which corresponds to this cdsenv:
layoutXL flightLineEnable boolean t
And the Create Wire command has a "Probe Nets" checkbox which corresponds to:
layoutXL probeDuringCreate boolean t