SwiftUI onReceive causing infinite loop on an embedded structure - swiftui

Question

I need to pass a list of choices and their choice IDs to a form to edit the list of choices. I'm able to edit these choices with no issues.
When I add an onReceive function to limit the number of characters to 30, the onReceive goes into an infinite loop. If I used an array of Strings, I do not get the infinite loop.
I want to keep the data in a struct to pass around my program.
I have simplified the code below to duplicate the issue, any advice would be greatly appreciated:
struct ContentView: View {
struct ChoiceDataObject {
var choiceId: Int
var choice: String
}
public struct dataParameter {
var choices:[ChoiceDataObject] = [
ChoiceDataObject(choiceId: 100, choice: "Choice 1"),
ChoiceDataObject(choiceId: 200, choice: "Choice 2")
]
var simpleArray: [String] = ["Choice 1", "Choice 2"]
}
#State var data = dataParameter()
var body: some View {
TextField("Enter some text", text: $data.choices[0].choice)
.onReceive(data.choices[0].choice.publisher.collect()) {
data.choices[0].choice = String($0.prefix(30)) // <-causing infinate loop
}
TextField("Enter some text", text: $data.simpleArray[0])
.onReceive(data.simpleArray[0].publisher.collect()) {
data.simpleArray[0] = String($0.prefix(30)) // <- this works
}
}
}