Pedal Sustain Style changes the alignment of pedals

[Noeck]

Hi,

this is probably a new question, so write it as new topic:

Why are the pedal symbols on a different vertical level with the mixed
and the bracket style but not in the default (text) style?

\version "2.16.0"
{
  \clef bass
  \set Staff.pedalSustainStyle = #'text % bracket mixed
  a,2\sustainOn a,\sustainOff
  a,,1\sustainOn
}

In my opinion, the default alignment should also be used for brackets.
That would also save Arle from further workarounds. Or what is the
reason for the pedals to behave differently with and without brackets?

Cheers,
Joram