This is in Russian, but you can see the blueprint graph.
I think it’s somehow similar to timeline, if you didn’t specify matine to play from start, it might likely at the end of track so when you try to play again it’s already finished.
I checked there is a SetPosition function to set track position to start(0,0), or in MatineActor(in editor detail), you can set “Rewind on Play” to true.