Did 0.18.3 break the context button?

At least since this morning, but maybe also for a couple of days now (not really sure?) the ability to view a comment's parent comment has been broken. I click it and it just takes me to a page showing nothing but the comment I clicked on.

It's not just on the web that's broken, but also in Jerboa, making me think it may be a backend problem, not a problem with the UI. Though Jerboa is broken in a slightly different way, showing comments in an incorrect level of indentation.

Is everyone else experiencing this?