looks like the inbox, if sorting by 'Path' is behaving differently than the standard tracks view. As is in 3.1.6287 Path does sort by path, but ignores secondary sorting / the fileName alphabetical sorting.
i.e. in main library tracks view, sorted by Path only, I see this:
In Inbox, sorted by Path only, I see this:
(random example... not necessarily in that order... but definitely not alphabetic by fileName as a second sorting facet, which seems to be the default in standard tracks view now).