SwiftUI – Model changes in Main View dismisses Navigation Stack – Ios swift

I have a Main View that initialises a ViewModel which every 30 seconds updates a list of items. The model (in order to have the same reference of items in the entire app) is passed around as an @EnvironmentalObject.

However when I am in the MainView->ListView->DescriptionView and the user for example tries to login, that affects the list of items and in sequence the views are forcing a redraw which results in the DescriptionView to be dismissed.

import SwiftUI

class ItemViewModel: ObservableObject {
    @Published var items: [Item]
    var timer: Timer?
    
    func polling() {
        refreshItemList()
    }
    
    init() {
        self.timer = Timer.scheduledTimer(timeInterval: 30, target: self, selector: #selector(polling), userInfo: nil, repeats: true)
    }
}

struct MainView {
    @StateObject var model: ItemViewModel
    @Environment(.presentationMode) var presentationMode: Binding<PresentationMode>

    var body: View {
        ListOfItemsView().environmentObject(model)
    }
}

struct ListOfItemsView {
    @EnvironmentObject var model: ItemViewModel
    @Environment(.presentationMode) var presentationMode: Binding<PresentationMode>
    var body: View {
        List(items) { item in
            NavigationLink(destination:
                ItemDescriptionView(item).environmentObject(model)
            ) {
                Text(item.title)
            }
        }
    }
}

struct ItemDescriptionView {
    let item: Item
    @Environment(.presentationMode) var presentationMode: Binding<PresentationMode>
    func logIn() {
        //Results into changes on the ItemViewModel and item list
    }
}