Look like it could be a binding issue? In your video, you've got two seperate sets of buttons bound to Main Power (22/23 and 27/28), which look like they might be interfering with each other. I'm not sure how you've set it up though, and I'm no bindings expert, so could be wrong.
Try each of the following and see if it helps:
- Remove one set of bindings (22/33 OR 27/28)
- Remove all Main Pwr bindings
- Run a DCS repair
I've had a few odd issues like this clear up with a repair
Majik's post in electrical power switch issue was marked as the answer