Sorting arrows are backwards for "standard" convention #596
I found some reference to it at https://ux.stackexchange.com/questions/2041/i-want-to-let-the-user-toggle-a-column-heading-to-sort-a-grid-by-a-date-field-h
And, since this is clearly a bikeshed issue, we could also use the icons from FortAwesome/Font-Awesome#9464 :)
+1 to reverse them, if we use icons such as in the FontAwesome link or have some other visual indicator of sort order.
According to the UX link, about half of the time users interpreted "up" from "down" differently, meaning that humans don't actually have any shared intuition about this. (I am suddenly reminded of the Dress.) To me this means that having some indication of what the interface means by "up" and "down" is important.
Even if we do not decide to include icons which help indicate order, we should probably change the icons anyway so that long-term users have a visual cue that something is different and don't just end up frustrated because things have flipped and they don't know why things seem broken until they figure out the change.