Comment 3 for bug 1746773

This is due to a change in GNOME 3.22 which started ordering search results by "match value" (essentially a value indicating how well the result matches the search terms). This is generated by a bitfield of metadata items that matched the search terms. Snap doesn't provide this, so the snap results were getting ordered by the fallback sorting field - the app id.

I've proposed getting rid of the default sorting field, thus keeping the snaps in the order they were returned from snapd:
https://gitlab.gnome.org/GNOME/gnome-software/merge_requests/16