The category column is kind of odd… it’s sortable, but why? Are you going to browse all topics in alphabetical category order? What is comparing categories in a separate column doing for anyone?
Why not move them under the topic title?
This is also where we show category names once we’re in a topic:
and it’s where we show them on mobile:
One potential downside for larger screens is that all topics now occupy two lines, instead of sometimes only occupying one (note that tags and assignments already create an additional line anyway)… but we’re also gaining some horizontal space, so it’s also less likely that long titles will have to break to two lines.
Unless there are unforeseen problems with this change, it should be simple enough to include as part of our ongoing 2.2 release