'Send to YouTube' VideoScores are not automatically synchronized to the score

VideoScores created with 'Send to YouTube' are not automatically synchronized to the score. This worked correctly prior to the last MuseScore[dot]com upgrade.

For example:
-Choose a VideoScore that was created with the 'Send to YouTube' option. and edit in the VideoScore editor (from 'Manage Audio Sources')
- Choose '...' then 'Clear Markers' and then choose 'Load Score Markers'
- Now press Play and watch how the VideoScore incorrectly tracks the MuseScore Score.
- For a comparison, I can point you to any of a number of VideoScores that do track correctly.

The issue is that the automatic placement of the score markers is not accounting for the ~5s opening credits and incorrectly places marker 1 at position 00:00 (instead of 00:05).