Does it behave itself once the car's warm?
On these boxes there's a "catalytic convertor protection/warmup mode" which delays upshifts until the engine reaches a certain running temperature, which helps the cat get to temperature earlier and prolongs its life/improves fuel economy.
It's actually nowhere near as bad on the Volvo as my old (four speed auto) Omega with a similar setting, which I swear had a thing for making me look a right idiot on winter mornings as I went roaring up the road with the engine at about 4000RPM in first. :-)
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