UserDefaults publisher for non-standard suite not working correctly

Please see the MRE below. Changing UserDefault suite to a custom one doesn't update the subscription beyond the first value.

public extension UserDefaults {
    @objc dynamic var value1: Int {
        get { integer(forKey: "value1") }
        set { set(newValue, forKey: "value1") }
    }

    static var other: UserDefaults {
        UserDefaults(suiteName: "other-defaults")!
    }
}

struct ContentView: View {
    private let sub = UserDefaults.other.publisher(for: \.value1).sink { print("SUB", $0) }

    var body: some View {
        Button("Add") {
            UserDefaults.other.value1 += 1
            debugPrint("SET", UserDefaults.other.value1)
        }
        .onReceive(UserDefaults.other.publisher(for: \.value1)) {
            debugPrint("UI", $0)
        }
    }
}

Only the SwiftUI onReceive subscription is working.

SUB 0
"UI" 0
"SET" 1
"UI" 1
"SET" 2
"UI" 2

It works (though with multiple calls) if I set the standard UserDefaults suite.

struct ContentView2: View {
    private let sub = UserDefaults.standard.publisher(for: \.value1).sink { print("SUB", $0) }

    var body: some View {
        Button("Add") {
            UserDefaults.standard.value1 += 1
            debugPrint("SET", UserDefaults.standard.value1)
        }
        .onReceive(UserDefaults.standard.publisher(for: \.value1)) {
            debugPrint("UI", $0)
        }
    }
}

SUB 0
"UI" 0
SUB 1
SUB 1
"SET" 1
"UI" 1
"UI" 1
SUB 2
SUB 2
"SET" 2
"UI" 2
"UI" 2