Clef change at start of system not displayed

Windows 7, GIT commit: 2242008

1) create new score, one treble clef instrument , key of G, >4 measures
2) add a line break after measure 4
3) change to bass clef at start of second system (either by dragging to measure, dragging to clef, or selecting measure and double clicking clef)

Result: clef still displays as treble, although the key signature indicates a change to bass clef, and entering notes into that measure also confirm the change to bass clef.