Nothing to worry about right now. Do you have any air flow in that propagation area? Light air movement will help strengthen those maturing stems.
How many days ago did you take these cuts / how rooted are they? I wouldn’t stress, sometimes clones do weird things depending on when you took them in flower. If i monster crop and take cuts past week 2-3 of flower I’m sure to get some upside down, mutant growth once they are rooted but before massive veg growth.