model.bumpedAt returns date of topic OP

Hi, I was attempting to create a theme component to make users confirm that they want to bump topics older than a certain date, following the advice in this old post.

However, I’ve been getting reports on my forum of spurious warnings claiming that the thread is multiple years old, and indeed, when I console.log(this.get('model.bumpedAt')) in my component, I get the date of the thread’s original post.

I also attempted to use lastPostedAt, but that doesn’t seem to exist (or does any official component/plugin API documentation in general).