Check
https://en.wikipedia.org/wiki/MIDI_Machine_Control
<Sub-ID#1> is recognised as <sub> tag causing font/size problems.
Version: 1.22.0
Severity: normal
See Also:
https://bugzilla.wikimedia.org/show_bug.cgi?id=40670
https://bugzilla.wikimedia.org/show_bug.cgi?id=17663