ottavation duplicates text after \break

[Jinsong Zhao]

Hi there,

For the following snippet,I want the ottavation duplicates text after 
\break to be (8va), how to get that?

\version "2.19.15"
\relative c'' {
     c4 \ottava #1
     \set Staff.ottavation = #"octave"
     c4 c4 c4 \break
     c4 c4 c4 c4
}

Thanks in advance.

Best regards,
Jinsong