I’ve got two 12722 switches that i want to install. The switches i’m replacing only operate 1 light each. One for my inside garage lights, the other for outside lights. I’ve replaced each switch exactly as the old for the black wires, added the white neutral to the new switches and grounded them. The only odd thing i see is that the Line wires are all connected. My crude drawing somewhat shows what i’m talking about. When i turn the power back on, one of the switches has the blue light come on, and when i hit the switch, it will turn off and on. Neither of my lights switch on either. One more thing, these must also have some connection to my garage door opener outlet. It no longer gets power at all.
I’ve attached pics as @dalec suggested. Sorry it’s a mess in the box. That’s how I found it.