I got an alert a few hours ago that just says: "The topic has a new post!"

It doesn't mention which topic or have a link to a topic or anything like that, so I have no idea what exactly it's referring to. I've never gotten this before.

( have one of these too. I'm not remotely active on forums lately due to vision problems and all my subscribed notifications appear to be off, from what I can see,

No, I don't recall getting anything like this since then. It seems like it may have just been a weird one-off bug.

Nope, it was just that once for me.