Slurs not handled correctly over repeats with multiple endings.
When a repeat has multiple endings and slurs cross into the endings, or out if the endings back to the beginning of the repeat, the slurs should act as if a line break occurred at the end of all but the last ending and at the beginning of all but the last ending. However, the slurs are drawn as if the ending did not connect to any but the immediately adjacent measure.
This can be worked around by manually redrawing the slurs. I've included an example which shows the corrected slurs in the score and the duet part, but not in the Alto Sax 1 and Alto Sax 2 parts.