Re: Issue 1612 in lilypond: Change staff produces long stems

[lilypond]

Comment #7 on issue 1612 by address@hidden: Change staff produces  
long stems
http://code.google.com/p/lilypond/issues/detail?id=1612

I propose, then, that we downgrade this to `high' with a @knownissues in  
the docs suggesting manual beams and a NOT_SMART convert-ly rule telling  
people to check for this at staff changes.

I'm still gonna think about how to remove these alien grobs from  
covered_grobs_ in the beam collision engraver, but it'll take me some time  
to crunch that & I'm slammed over the next few days.