1 In Explorer, right-click an M3U and clck Mp3tag - playlist appears in correct order (no column shows sort indicator arrow)
2 Press F3 to engage Filter, enter values that exclude some tracks.
3 Press F3 to disengage filter.
Expected: track order preserved
Observed: track order changed to artist! (Artist column shows sort indicator arrow)
Since I rewrote all the code around filtering in Mp3tag with v2.45, I guess it has been fixed during the rewrite. If this issue occurs to you with the current version, please feel free to bump this topic again.