Does standby add to the screen time recorded on a device?

Apple Support Case 102149792534 confirms that Standby Mode does indeed count as Screen Time. They did not confirm whether this intended behavior or a bug.

Hello,

StandBy should not add ScreenTime, it’s a feature of lockscreen so it won’t use it.

Please consult:

Use StandBy to view information at a distance while iPhone is charging – Apple Support (UK)

I think there is a bug within ios17. I have the same issue.

This tells me that is is a bug, because on my iPhone 14 Pro, it is in fact adding standby time to my screen time.