Ugly collision between broken Slur and PhrasingSlur

[Urs Liska]

Hi,

following the late discussions on bug- and -user, I stumbled over an 
ugly collision between a phrasingSlur and a Slur at the beginning of a 
second staff. Actually the phrasing slur tries to escape the slur but 
does this in a spectacular way - while the collision is still there:

\version "2.15.5"

\relative a'
{
  \key d \major
  \time 2/2
  \clef treble

   a2.\(( d8[ cis] | \break
   b2 cis4) b\) | \break

   a2.\((\p d8[ cis] | \break
   b2.) cis4\) | \break

}

The breaks are needed because in the real example there are many notes 
in the piano ...
In lines 1 and 2 it is only an ugly collision (probably an instance of 
issue #427?)
but lines 3 and 4 (when the slur ends on the first note after the line 
break) are really crazy and mess up the page layout of my music completely.

Is this just issue #427 or should one add a new issue?
If not, what about the fact that #427 is abandonde?
I think this is quite an embarassing output.

Best
Ur