Horizontal frame at end of system followed by staff names
Windows 7, GIT commit: fa00a2a
1) create new score for two instruments (I used "Horn in F" and "C Trumpet")
2) key of C, 4/4, 32 bars
3) drag horizontal frame top first measure of second system
Result: frame appears at end of previous system, which is fine since I guess there is room, but the staff names are repeated after the frame.
Attempting to add a line break to the frame also produces incorrect results: the frame is moved to a new system all by itself (except for the phantom staff names):