yeah. i wouldn't worry about it.
i received my ppr on 31st march. the gc key application status details section showed my biometrics as completed on march 28th (i had submitted on january 22nd), and the tracker showed them as green when the final decision was made (march 31st).
apparently the biometrics completion update on the tracker/gckey (application status details) has to be manually triggered by the case/visa officer. if not, this status automatically appears when the deadline for biometrics is passed, even when you have submitted the biometrics (the information of which is shown in the box in the right-hand corner of gckey, within 24 hours of submitting biometrics).
you can also use this tool to confirm ircc has received your biometrics
https://onlineservices-servicesenligne.cic.gc.ca/extapp/bioStatusQuery