I think default sorting for author generated level is inverted.
All other locations(community/friends etc) are sorted from newest to oldest.
Local user generated levels are sorted from oldest to newest, at least for me.
I know other locations have options for filters to modify sorting.
Unfortunately, author generated levels do not have these options.
I checked some Felgo demos and levels sorting is also inverted in this area.
Could you check
authorGeneratedLevels default sorting if it’s wrong for you as well?
Linux Mint with newest Felgo.