TL;DR
Set Database > Fittings > Pattern Options > General > Machine Cut Straights from Fittings to Straights
Background
I set a list Single Dimension Specification for **Straights Only, which expects the thickness of sheet metal for straight ducts changes according to long side dimension.
I found, CID 35 (decoiled) is ruled as expected, but not CID 1 or any other machine cut straights.
Finally, I found this working option.