Option `headwidth=textwithmargin` of `scrlayer-scrpage` package for asymmetric page layouts

In the following example I am trying to extend the width of the header and the footer of the KOMA-Script class scrbook to include the width of the margin column:

documentclass{scrbook}

usepackage{scrlayer-scrpage}
usepackage{geometry}
usepackage{calc}
usepackage{lipsum}

geometry{
  includemp,
  hmargin=25mm,
  marginparwidth=15mm,
  marginparsep=5mm,
  reversemp,
  asymmetric,
}

KOMAoptions{
  usegeometry,
  headwidth=textwithmarginpar,
  footwidth=textwithmarginpar,
}

ihead{(empty)}
ohead{makeHeader}
ifoot{makeDocName}
ofoot{makeFooterquadthepage}

begin{document}
abc marginpar{Note 1} lipsum[1]
lipsum[2-8] marginpar{Note 2}
end{document}

Although the widths seem to be adjusted correctly, the alignment of the header and the footer seem to be wrong on page 1: The header and the footer are extended to the outer margin, not to the inner margin. The formatting of page 2 is as I expected.

If I change the values for the headwidth and the footwidth options in KOMAoptions to the following values, everything works out fine even for page 1:

KOMAoptions{
  usegeometry,
  headwidth=textwithmarginpar:-marginparwidth-marginparsep:marginparwidth+marginparsep,
  footwidth=textwithmarginpar:-marginparwidth-marginparsep:marginparwidth+marginparsep,
}

Is this the intended behaviour or is this a bug? I would have expected the first solution to work out of the box.

Maybe the scrlayer-scrpage package is not able to recognize the reversemp and asymmetric options of the geometry package correctly?