I can’t confirm… it works on my end 
If the two lines are completly parallel (Scale X → 0), the result is False:
As soon as i rotate one line just a little bit it turns to True (because the two lines will intersect really really far away):
Maybe the threshold is set too small for your usecase? You can change the Epsilon value of the Comparison node inside the nodegroup and see if that works for you:
