DavidR
2
No it isn’t a bug, when you click the Scan tile, it starts the default scan, that is the Quick scan.
You can choose a different scan for your default, by clicking the Security tile and Antivirus Tab, the current default scan will have a Green circle with a check mark. Open the More details option, here you can set the scan to be the default.
Personally I never use the Scan tile as I rarely if ever have the Home metro style page open, I usually open it at the Security tab as it has most of the useful information easily to hand. I also don’t initiate scans manually, but do a weekly schedules Quick scan.