Tap to wake screen feature or bug?

Received the epix yesterday and noticed the following:

when the watch is not being worn the screen goes off as expected however the slightest of vibrations wakes the screen. I have the watch on a bedroom side table a slight tap on the table wakes the screen even some one walking in the room can trigger it. I’m assuming it might be to do with making sure the screen is on for those who do cycling and use the watch as a bike computer. But it’s crazy sensitive and I’d rather it didn’t do this when not worn. DND doesn’t make difference. Any setting I might have missed?  Thanks