That's interesting. If it were me, I don't think I'd use it either. I don't like the thought of it being exposed to extreme temperature fluctuations. I wonder why that would happen?
Exposure to temperature fluctuations is gonna happen during product delivery. If i order makeup from Cali (which i just did actually), whose temps are whT, in the 70s, and it gets delivered across the US to my house in Indiana, our temps our in the single digits right now. Extreme temp fluctuations right there, in the matter of a couple of days, just in the delivery process. So imagine what would happen if you have warehouse storeage, delivery to a store, storage at a store (when i worked at MAC our storage room shored a wall with the the buildings outter wall, and there was so heat/air conditioning in the room), then if the store ships it to a customer, etc. It doesn't harm the product at all. It's just the nature of the ingredients in the product, and the process those ingredients go thru.