I get this a lot, What i've figured out is its a Calcium uptake problem for twisted new growth, but reason for happening is the soil ph being to low.
I got a blue lab ph pen and found out that my media was around 5.3 after watering which is bad
cause from salt build up, over watering, root rot, all these cause the media to drop in ph out of the sweet spot
Its important to check this around weeks 3 and 4 of flower as that's typically when your rhizosphere starts getting out of the sweet spot
once its out of the sweet spot the first thing you see is light twisted top growth, I am working on a new journal with this problem in it
I have simply increased my PH to 6.3-6.5 ( typically 6.0) You should try the same
Water when the pot is bone dry and youll see some major difference
PS if you add a layer of perlite on the bottom of the pot it will help prevent root rot!