The issue has been corrected, schedule refresh is available again for new reports (Power BI - Sharepoint Online).
This is the reply I got on my ticket from Microsoft support on Saturday , Dec 10:
"The fix is being tested and should be deployed on your tenant (I guess you are using North Europe) in the night between Monday and Tuesday at US time."
And on Wednesday, Dec 14:
"The problem have been fixed on the North Europe cluster few minutes ago.
Can you confirm the problem is solved?"
Thank you all for feedback, support etc.