Some times it happens, that opera ( 41.0.2329.0) displays a about:blank page or some e.g. https://staticxx.facebook.com/connect/xdarbiter/r/uN4cXtJDGb.js?version=42#
after going bak one page within a site. This appears periodically on different sites and I can't see any regularity.
Clear cache dit not help and also malewarebytes found nothing.
is there anyone with similar symtoms?
+1 for also having the issue