Am Donnerstag, den 07.01.2016, 16:37 -0500 schrieb Paul W. Frields:
The nightly developer edition is still Firefox, just with new stuff. You don't have to give up the browser entirely. It seems to me the XO in its normal operating mode was a similar case here. I hope no one would claim that was non-free.
Just another point: Do we know *how many* users use the packaged addons? IMHO it would be a bad idea to annoy the majority of the users with one of the suggested solutions while the problem only affects a minority.