Music playing by default with video player "overlay"

[alphabitnz]

First time seeing this issue, and never happened before switching to Embuary skin recently.
Also note I have disabled script.embuary.info relating to an issue report filed earlier today.

Playback of music seems to default to the video OSD (visualisation frozen, config button on right side rather than left, smaller album art etc.) until I press the 'Back' button which returns to the music OSD.

If the track changes, the video OSD layers on top again until I press the 'Back' button.
However this issue does not occur if the music OSD controls are visible when the player advances to the next track - whether naturally advancing or manually skipping.