I think I came across with the overtime issue.
Both teams have reached the 1st capture point but there's no team that finish capture 1st point. The overtime ended as soon as no one contest the Crystal, which result as the team stand on the crystal wins.
Isn't normally the overtime will last until one of two teams captured the 1st point and reach more than 50% of overall progress?
If I'm wrong, please correct me about this situation.