I have an issue on mobile devices with background images I set for the rows when Speed Booster Pack plugin is enabled. I have no issues on websites without BB plugin.
Under Speed Booster Pack after enabling an option “Load CSS asynchronously” the background image doesn’t display any more on mobile devices. The background image link changes to “http://www.metapartner.com/wp-content/uploads/bb-plugin/cache/http:/www.metapartner.com/wp-content/uploads/2015/07/mp-anfrage.jpg” and I’m getting 404 (not found) error. It looks like some issue with bb cache.
You can test my website metapartner.com with chrome developers tools and device simulator.
I attach the screenshot:
Could you please check that out.