Please go to the Configuration -> Misc tab of JFBConnect. In the "Experimental" area, there is just one setting like "Strip tags from head". Enable that setting and test again. You'll want to test all your pages to make sure the tag is removed and that no other 'bad' things are happening.
Let us know how that goes. It's an experimental fix, as is noted, but should work. We just didn't want to enable it by default in case there were unforeseen issues.
Thanks,
Alex