I think this has come up before. Unfortunately, the metadata we have for the album doesn’t have composition structure (or even explicitly keeps the tracks ungrouped on the grounds of it being an “incomplete performance” of the composition – which is often the case with Pictures). But we still attempt to derive composition structure from track titles. IIRC, it’s the fact that there are identical named parts called “Promenade” which causes Roon to treat the subsequent tracks as a different performance of the same composition.