Steamchord rune hideout decoration doesn't play repeated notes

The Steamchord rune hideout decoration doesn't play repeated notes, unless you take a longer pause between notes.

If you put multiple steamchord runes next to each other with the same note, and run across them, they will generally not play the note past the first note, only the puff of smoke sound behind each note.

So instead of [Note 1][Note 1][Note 1] you get [Note 1][Puff][Puff].

To get the same notes to play you need to run off the rune, pause briefly, then run onto the next one.

When using different notes in a sequence, this does not occur, so you can run across the chords quickly as per the MTX preview video.

Can U Tell me, how to change the tone of any chord? If I walk over it, it's all the same sound.