Client Spells menu bugged

After clicking off of one spell to watch the video for another, the audio of the previous video continues to play. For instance, when clicking from ghost to heal to exhaust, you can hear the sound for each of those spells being played over top each other, in addition to the other respective sounds for the videos.

Also, as a side note, Backtrack does not have a video when clicked on, and just keeps the video for the previously selected spell playing.

EDIT: Appears to only happen after selecting the Backtrack spell once.