Yes, that would be a bug. Do the new INFO and INFO+ commands also fail in the same way when using database links?
desc a table via a database link does not work properly in sqldeveloper and sqlcl (17.3.1)
Post your test cases showing that the SAME USER is being used for the cases when it 'works' and when it does NOT work.
yes info and info+ fails in the same way : Object Not Found: D101200.Bef_bopael@Db_psd