Hm interesting!
They don't look like they got
physically burned by the light though (I had that with leaves growing into bulbs, so..)
Actually, the way they look, it reminds me of the way my sour stomper's leaves looked as it pushed my lights to max height and still grew on...
I have this vague concept of too much light causing problems with nutrient balance. I thought at the time it had to do with nutes & very quick growth, but that was possibly aggravated by an excess of light intensity?
Or is that what you meant all along, and I'm just slow to catch on? Cheers!