Spotify Shuffle has a Problem

[jtdrumline]

This is my second post on Spotify's shuffle function, but for a completely different problem than last time. i have a Soundtrack playlist of 750 songs and, more often then not, the shuffle only plays Harry Potter. And i mean ONLY Harry Potter, 100% (See picture). This happens quite often. Please fix this, you said you fixed this in February but the problem persists in December 2016.