It vents vinegar? Very interesting. The bug might have had putty under the weatherstrip, but it definitely had a whole bunch of clear silicone on top of the weatherstrip to seal it too - obviously done by a previous owner. Those areas were completely rotten.
I don't remember seeing any sealant on my '74 superbug, though I think the weatherstrip had all been replaced at some point with the "cali" look stuff - no chrome. I had to replace it all again after I bought it. Ugh. I don't miss dealing with that car. Top tip folks, don't buy a car that's been sitting in a field with a couple windows busted out, and an overhaul engine. (Overhaul engine - you need to haul it from over there to over here with the rest of the car)