MuseScore Online File Plays An Extra Count-in Beat (Hidden Note)?

• May 27, 2019 - 18:48
Type
Performance
Frequency
Many
Severity
S3 - Major
Reproducibility
Randomly
Status
needs info
Regression
No
Workaround
No
Project
MuseScore

As titled, for the uploaded file:
https://musescore.com/user/10086716/scores/5586788

Upon page loading, MuseScore online file plays THREE count-in beats (hidden notes) of supposed TWO, this can corrected by clicking the "Rewind".