Thanks for trying and testing the game!
I am aware of the bugs where the dot will go wild and jump out of the base to play by itself, haha!
For the technical side I am not pre scripting the travelling path of the dots so I cannot avoid this problem entirely without revamping the synchronization logic.
Meanwhile you may try to restart from the pause menu(ESC) to ask it to come back to the base. Don't consecutively restart without starting a song or else you will hear it complaining during the song play! (another funny bug)