Anyone else experiencing mysteriously vanishing toots?

So, I somewhat recently posted a link to a friend's crowdfunding page as she seeks help getting a new computer for getting back to work. I diagnosed her problem with her current laptop tonight as actually being a short in the motherboard. That's what's messing with her I/O so badly. I went to update that toot tonight only to find it has vanished from my timeline, and I'd had it pinned.