can't change schedule of quick scan

Protection > Antivirus > Other Scans

I noticed today that the scan started at a time different than what I chose.

Below the “Quick Scan” box appears “Run your scan weekly on at 8:00”

In “Scheduling”, the day and time were still as I chose, but even if I change (and OK) them,
the same text appears, so the scheduling is now fixed at a time not of my choosing.

Known issue, devs are working on it.