Currently I can only answer questions but not comment on them. It is not possible to write text in the comment box:
Works neither in Firefox nor Chrome with current version.
Same is true for Product Ideas, I can use the commetn box at the bottom, but not the Give Feecback directly under the idea.
p.s.: Also I can't post this question without a tag, but for this questin there is no matching tag in the list, so I've chossen a random tag.