'69 windshield gasket...two kinds of sealer?

The first a-body windshield I removed was a white 67 notchback with red interior and red headliner. Co-worker and I decided that the off white sealant I found was likely the same glazing compound/putty used on wooden house window frames ( probably was a bit whiter when new ). When I reinstalled that windshield, using the black butyl sealant all around, I did get a little of it on my brand new red headliner. Never got 100% of it cleaned off. Passengers sun visor hid it, out of sight, out of mind. Why that headliner came back out about 3 weeks later is a whole different story. Anyway... I know the white window glazing putty hardens over time and is much easier to work with. The gasket might have came to the assembly line with a round bead of the stuff already in the gasket. Only place they would need stronger adhesive like sealant is where there is no fence for the gasket to sit on. That is what we found, right?