Hi,
Tonight I had a problem where Garmin Connect modern would not load - it brought up the left side buttons but they did nothing when clicked and the main page was blank (see attached).
I poked around with Firebug and found http://s7.addthis.com/js/250/addthis_widget.js#username=grmnconnect&async=1.js?bust=14.5.0.17 was not loading - it stalled for a while then timed out. When I pointed s7.addthis.com to a local web server it worked OK in Firefox but still not in Chrome. In Chome I found the Disconnect addon was stopping the load of addthis for privacy reasons.
Garmin, can I suggest that failing to load an external resource should not stop your site from loading? If addthis.om was down is would not be OK for your site not to load, and I would prefer not to have to make exceptions to my privacy settings just to load your site.
Thanks,
Paul