Chords and lyrics overlap in only one system
A simple score: voice and piano (simplified Thunder Road to accompany myself on piano). Lyrics attached to the voice (below), chord symbols attached to treble bar (above). In only a single system, vertical spacing between voice and piano is too small, and chords overlap lyrics. In all the other systems, the distance is fine. I'm using standard MuseScore styles, with only the font sizes adjusted (lyrics 9pt, chords 10pt). What's going wrong here?