Link to answer's author not working

When clicking on the name of the author of a given answer, I would expect to be redirected to the author's profile, but instead it just links to the answer.

On a similar note, I would expect to be able to click on a comment's author in the same fashion, but this is currently not possible.

I hope this description is clear. To reproduce, click on the name of the author here: https://exams.vis.ethz.ch/exams/okf1mztb.pdf#d404rj5gnp46alui