Audio source and score syncing

When I added an audio source to my score, the score doesn't scroll whenever the audio source from the YouTube video is playing.

But when I go back to the default MuseScore audio, the score automatically jumps to where it would be in the piece and vice versa.

This is my first using Manage audio sources so I'm not sure if there's anything I'm missing here.

Link to the score in question: https://musescore.com/user/4462906/scores/2502071