Do fluorescent tube bulbs have a problem at lower temperatures?

I bought a cold start rated T8 twin tube 4ft fluorescent shoplight for my garage about 6yrs ago from Lowes or Home Depot (don't recall).

I was just out in the garage and it's 0degF out. It fires up to full brightness. No need for special bulbs. It's all in the ballast for T8s.
I've had much the same experience in my unheated garage for the last 17 years. The coldest it has gotten in my garage is 10F. It takes about 2 minutes for the bulbs to fully brighten when that cold. As I recall the ballasts were rated at -10F.
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