BTW the error is not present with FF + uBlock Origin.
EDIT: there is a less know FB app, called Facebook Lite. When you try to install it, you'll get a "This app is incompatible with all of your devices." - which is not true. It's fully compatible, you're just not in the eligible geolication. To get it: http://www.apkmirror.com/apk/facebook-2/lite/lite-53-0-0-3-9...
It's an alternative, tiny app, without the bloat of the "true" FB app, aimed at developing countries where smartphones are much less powerful.