Would be great if you had a Github location for this install so we could help you improve it by logging Issues (bugs). Not so convenient in here :)

UPDATE2: Turns out it's the Content Blocking: Custom settings that are breaking feedburner feeds. They must use some sort of redirect cookie or something that my settings reject.

UPDATE: Looks like feedburner links are breaking in the current version.

Very hard to give developer feedback / document bugs without an issue tracking system. Suggestion: Github (short of Mozilla actually adding issue reporting here in AMO) ?

YES! Finally after years of waiting, the doom and gloom of WebExtensions and Quantum plus Mozilla killing native RSS ... I can now view feeds as I have done for years.

This is not just a continuation of a critical use case for me but nothing short of enabling me to finally move to Quantum's speed improvements.

Only one issue prevents me from a 5 star review: I need to always open articles in a separate tab. Is there a repo I can clone to tweak this?

So many RSS alternatives focused on the Sage newspaper-like view and or did not use the WebExtension Sidebar API. It's amazing Mozilla even supplied this API instead of butchering it like most other APIs that formerly integrated significantly with chunks of browser chrome instead of all addons relying on doorhanger panels and/or their own content tabs. This addon re-implements the exact subset of Sage functionality that I used and needed. Maybe it does more, maybe not, I'm oblivious as it does almost everything I need.

The name and logo are very nice as well, which absolutely makes a big difference.

Thank you so very much for your efforts. I've been hunting and depressed whenever I failed to find a solution. I was just about to start trying to make my own but was feeling very daunted by the prospect.

Seems like a very good replacement for Sage addon. I'll take it.