Sub-beam of flipped notes incorrectly placed after adding horizontal frame mid-system

The 'mis-beaming' occurs only if the horizontal frame is mid-system and if the notes are flipped ('X'); if the frame is at the beginning or end of a system or if the notes are not flipped, beaming is correct.

Hoping this helps to diagnose the issue...

M.

UPDATE:

The issue originates in function Beam::layout2() (file libmscore.beam.cpp) in lines 1578 - 1590 controlled by the test:
    if (c1 && (cr1->up() == cr2->up()))

When there is no mid-staff horiz. frame, the last line
    bl = baseLevel - (beamLevel + 1);
is NOT executed (correctly). When there is a frame, the line IS executed (incorrectly).

The logic of the lines immediately above escapes me (why and how the page position of what is relevant?).

Then I cannot go on, but I think that someone with enough knowledge could fix the issue with realitive ease, at this point.

Thanks,

M.

The code has been added a year ago https://github.com/musescore/MuseScore/commit/126584b509a2735e33ab5522c…
It seems to be related with cross staff beaming?

Hope the title is better?

See PR #714

Automatically closed -- issue fixed for 2 weeks with no activity.