cannabis leave was splitting up

One of the leaves of the second cannabis leaves was splitting up, why is that happening? is it a bug?

From my chair, that looks normal to me. You know how big weed leaves have the different blades? Well, this is just the plant starting in on that. Don't worry about it, IMO!

Cheers!

Thats normal, plants dont always produce perfect 5-7 prawn leaves. If this is constantly happening as it grows and their is curling and mozaic patterns of discoloring then I would be worried that you have mites. But this looks like the leaf just growing.