Resolved
Reported for: Toolset Views 2.7.4
Toolset offers a Sort Order By Input which can also feature a Sort Order Input to decide how to sort what we sort by (e.g. ascending, descending).
If you happen to alter the vanilla Sort Order from the default to anything else, and then trigger pagination of wpv-pager-prev-page and wpv-pager-next-page, the Sort Order is reset to default and hence, disrespected in the Sort Order.