Regular diesel does this as well. There’s some additive that has to be added in the winter. It’s not the fault of biodiesel.
Biodiesel has entirely different characteristics in this kind of cold. Regular additives like 911 or anti-jell do not work as well and do not penetrate fouled lines in biodiesel. Biodiesel for commercial fuel use has paraffin added. (Canning wax)
Bio diesel is a substitute for diesel in Southern climates but like ethanol, it does not burn as well and is not as efficient due to lower cetane ratings. It requires expensive additives to bring it up to the level of real diesel. Which, in my opinion, is not worth it even during warmer seasons. Many truckers agree with me.