It does work, but you have to disable compatibility checking AND secure update checking. I’d rather not disable the latter, so I’m not using it right now. It’s the only extension of the 65 I have installed that doesn’t work without disabling secure update checking.

The secure update checking could quickly be remedied by installing the extension from Mozilla. I’m not sure if this is the same version of the Evernote Web Clipper that you’re using though:
[addons.mozilla.org]

That’s the one I miss the most too Matt! I wrote them about it but received no response. I presume they will release a compatible version soon though, as it’s quite easy to make it compatible.

Do you know if it really doesn’t work, or they just haven’t officially made it compatible? Just curious.

Regarding going into about:config set the compatibility, it’s far easier if you use Mr. Tech. Go into Misc/xpi install options and uncheck “enable addons compatibility checking” which accomplishes the same thing.

True, but many people prefer to minimize the number of extensions that are installed. If that’s the only reason you install it then I think you’re better off using the trick I mentioned.

I’m guessing the wide availability of apps that can add this feature is the main reason someone else hasn’t picked up the project. Personally minimizing Firefox to the tray is not something I’ve ever done, but I do think it should be a built-in feature.

Agreed, and for Thunderbird as well, especially with IMAP.