Bug in lilypond version 2.6.0 combining \arpeggioBracket and connectArpeggios.

[Dainis Millers]

I have the following Lilypond fragment:

\context PianoStaff <<
  \set PianoStaff.connectArpeggios = ##t

  \context Voice = one
  {
    \arpeggioBracket <c' e g c>\arpeggio
  }
  \context Voice = other
  {
    \clef bass
    \arpeggioBracket  <c, e g>\arpeggio
  }
> >


I expect a bracket between the staffs (or a warning or error message), but I 
get an arpeggio. Apparently this has worked previously with a different 
syntax (see 
http://www.lilypond.org/doc/v1.6/Documentation/user/out-www/lilypond/Arpeggio.html
).

I previously used 2.4.6 in cygwin which has the same (buggy) behaviour as 2.6.

Is this a bug? If not, how can I produce cross-staff brackets? If it is, my
apologies for not digging deeper into the code; I have just discovered
Lilypond and am still very much a learner.