LED light leak?

i have a plant that isnt showing sex. the other are flowering.

could something as little as a red led about 4mm(max) count as light leak and not let the plant go into flower?

the other 2 are flowering nicely, in the same room, same feeds etc.

That would suck lmao but they do say the tiniest light.

Well there is this thing called a moon... In the real world total darkness is pretty rare. If two are flowering fine I bet you're ok.

Some can just take longer to get started.