このstackoverflowは同じ内容に見えますね、ここに書いてあるアプローチは全て試しましたか？ https://stackoverflow.com/questions/57700396/adding-a-drag-gesture-in-swiftui-to-a-view-inside-a-scrollview-blocks-the-scroll

Adding a drag gesture in SwiftUI to a View inside a ScrollView bloc...

So I have a ScrollView holding a set of views: ScrollView { ForEach(cities) { city in NavigationLink(destination: ...) { CityRow(city: city) } ...

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