Faulty motion sensor or duff hub update?

Hi All,

My v2 hub got updated to 25.0006 the other day and since yesterday one of my 2nd gen smart things motion sensors has been going crazy, detecting motion every minute or so, even if no one is in the house.

Unfortunately it’s the one in my living room, so i’ve had to remove it from SHM as the classic app was bombarding me with alerts.

The battery is showing as 66% full. I’ve replaced it with a fresh battery, removed and re added it to smart things and it’s still messing about.

Any ideas? or should i just replace it?