I have a problem with the 'unique' CSS files and collective lineage (the subsites with their own themes).
Is there way to 'use normal urls' (the CSS hardly changes anyway):
My problem is that 'suddenly', the sub site can no longer find for example:
++plone++static/++unique++2017-07-06%2015%3A14%3A47.734976/plone-legacy-compiled.css