But I clued into something recently- which is that my veg light glows red for quite a while after I turn it off. That's obvious and I knew that already- but I hadn't really been paying attention to how long it takes to dim, because I have to crouch down to see it.
I hoped the plants weren't watching - but I think they were. The hex plants are closest to the door, with the view of that faint red glow.
Ya know.... your lights have been doing that same thing since you first plugged them in and a few minutes of a faint red glow seems like a non-issue to me.
What about the division between bloom and veg? Have you observed the situation by hanging out in the veg area and observing the situation with your own eyes? Seems to me like that would be your most likely culprit.
Ya know the Southpark song Chef wrote.... 'Stinky Britches'? When I see photos of well coated trimming fingers, I sing the 'Sticky Fingers' song to Chef's tune.
Sticky fingers... you got the sticky fingers....