I have a vanilla J3.5.1 site with the template loaded, the site runs in https and I have an error that http://fonts.gstatic.com/s/materialicons/v12/2fcrYFNaTjcS6g4U3t-Y5ZjZjT5FdEJ140U2DJYC3mY.woff2 is being loaded via http (As can be seen from the string)

I haven't been able to work out where it is being loaded from chrome console suggests its from jquery-1.9.1.min.js:3

Any help in resolving this would be great