mk, bugski here. I didn't share this, yet it's showing that I did, in here, in global, and in my profile page. Every time I click to unshare, the share button goes grey but as soon as I refresh any of those pages, it's back.
I don't mind too much, cause it's just a share, but that's a really weird bug to have and I don't think it's the first time I've come across this problem.
And since I'm here, AGB wasn't the only person working on the Telephone. Drunk History has a hilarious episode where they talk about Alexander Graham Bell and Elisha Gray competing to create the device. They weren't the only ones working in it either.