Markup spacing issue

[Noeck]

Hi,

is this a bug or intended: The following code worked nicely in 2.16 but
with the latest version, the two columns do not fill the whole page
width (what I would expect from fill-line). The 2.17 docs have a similar
example - I found no syntax change.

\version "2.17.26" %"2.16.0"

\markup \fill-line {
  \hspace #0.1          % shows no visible effect
  \column {
    "Trägt die schönsten bunten Schleifen,"
  }
  \hspace #0.1          % does not push the next column to the right
  \column {
    "Hat das Jahr genug vom Tanzen,"
  }
  \hspace #0.1
}

Is this a bug?

Cheers,
Joram