I liked the addon but after a long time of trying to figure out a problem, I've discovered this addon is to blame. I cannot log into Feedly. With this addon disabled and all others enabled, I can log in. I think it is how it tries to open tabs. Sad, because I loved the context menu option. But I like logging in to sites better. I'm weird that way.

It doesn't work. Just hijacks the current tab, hence the same as the normal firefox behaviour. Hence it's existence is pointless.