Slur positions over ascending/descending semibreve scales is incorrect
From what I understand, Marc Sabetella recently created a pull request that improved slur positions. Unfortunately, as of the latest beta (December 14, 2018) there are still issues with slurs and ascending/descending scales compromised of semibreves i.e. whole notes. I think a screenshot or two will help:
Here, the slur for the scale in the left hand is correct, but the slur in the right hand is positioned too high by default.
And here in the descending scale, both slurs are positioned too high by default.