Brilliant that this is now photon-compatible, thanks.

However, it seems to have lost my previous uMatrix profiles, so several sites refused to render or to work properly (including addons.moz comments!) until I updated them. Ouch.

That's a bit careless, with no notification. But I sort of understand, and it's a little unfair to criticise after all the work Raymond has done. I blame moz more for the dog's breakfast approach.

Very puzzling until I worked it out. And I had been complaining about Nightly developers, too, releasing a version that didn't render properly, when it was the unannounced uMatrix update that did it.