@amybirc77 there does appear to be some new caching bug here.
If I deploy a new report I can see all the rows.
If I then add a role and add my test user to a role I can still see all rows.
But I can "fix" this if I re-start the service using the Report Server Configuration Manager.
Or if I delete the report from the portal and re-deploy it (and then re-add the user(s) to the roles)
I don't think this is something we can fix on this forum. I think you will need to raise a ticket with Microsoft Support.