I've been vaping atomic cinnacide 80/20 24mg. I am aware of the comments on cinnamon and i had the foresight to order a couple of spare tubes. I was hoping the "new" tube material might be more resistant.
What seems peculiar to me though is the fact the crack started at the top of the tube,not the bottom where its in contact with the juice all the time. I'm still wondering if the stopper material expands with heat ever so slightly. imo that may put pressure on the edge enough to start a crack?
It's a chemical reaction... Between the poly material and the ingredients of the juice... Simple explanation.