Ties in chords with line breaks touch the clef

Open the score ties_0.mscz (created from scratch with MuseScore a92d346 on Xubuntu 14.10).

At the end of the second system, there's a chord with ties:

Ties extend to the first measure of the third system. See how the middle tie touches the bass clef:

I would expect some space between the clef and the tie, so there's no collision.