abc2svg is an external script which convert music in abc format to an svg image with class "music" using a data-application / font.
When the pages are first displayed everything is OK : .music{font: 24px music; fill:currentColor} is used
For the next displays there is a problem of font. The class of the svg is still music, the data-application font is still in the ressources but .music{font: 24px music; fill:currentColor} is not present and body {... font-family : sans-serif ...} is used.
I know that "$(document).ready(function(){" is normally not used in jQuery mobile but if I don't write it, the script abc2svg-1.js seems not loaded when the pageshow event is fired.