EufyCam2 ignores HomeKit Activity Zone, records all motion, drains battery


I have two EufyCam2 cameras. One is pointed at an area receiving little motion, the other is pointed toward a street. Both are set up with HomeKit, and I have defined HomeKit Activity zones for both.

While on a recent trip (when I activated the recording feature of both cameras), I notice that the camera facing the street was draining battery at 10% per day (the other camera was not). I checked the Eufy app on my iPhone and realized that the camera facing the street was almost constantly recording video, but not HomeKit video: it was ignoring the HomeKit Activity Zone and (presumably) recording video to the base.

How can I stop this? I only want video recorded in the HomeKit activity Zone and only to iCloud.