im having an issue with a custom tab bar in swiftui. It works fine if you go through the views using the tabbar, but im having a weird issue, in searchview() i have a button to open a navigation stack using a fullscreencover. once i dismiss the views from full screen cover, a toolbar is appearing on top of my custom tabbar, moving the views around 20 px on top of the tabbar. Any ideas how to solve this?

import SwiftUI

struct NewTabView: View {

let user: User
@StateObject private var programsViewModel = ProgramViewModel()
@StateObject private var workoutsViewModel = WorkoutViewModel()

@State var currentTab: HomeTab = .home
@State private var isShowingFullScreenCover = false

init(user: User) {
    self.user = user
    UITabBar.appearance().isHidden = true
}

var body: some View {
    

    VStack(spacing: 0) {
        TabView(selection: $currentTab) {
            MainView(workoutsViewModel: workoutsViewModel, user: user)
                .applyBG()
                .tag(HomeTab.home)
            
            SearchView()
                .applyBG()
                .tag(HomeTab.workouts)
            
            ProgramLoaderView(user: user, programsViewModel: programsViewModel)
                .applyBG()
                .tag(HomeTab.program)
            
            LikedView()
                .applyBG()
                .tag(HomeTab.liked)
            
            ActivityView()
                .applyBG()
                .tag(HomeTab.you)
        }
        
        CustomTab(currentTab: $currentTab)
            .background(.black.opacity(0.9))

    }
    
}
}

struct CustomTab: View {
@Binding var currentTab: HomeTab
var body: some View {
    GeometryReader { proxy in
        HStack(spacing: 0) {
            ForEach(HomeTab.allCases, id: .rawValue) { tab in
                Button {
                    withAnimation(.easeInOut(duration: 0.2)) {
                        currentTab = tab
                    }
                } label: {
                    VStack {
                        Image(systemName: tab.symbol)
                            .renderingMode(.template)
                            .resizable()
                            .aspectRatio(contentMode: .fit)
                            .frame(width: 25, height: 25)
                            .frame(maxWidth: .infinity)
                            .foregroundStyle(currentTab == tab ? .white : .gray)
                     
                        Circle()
                            .fill(.red.opacity(0.8))
                            .frame(width: 10, height: 10)
                            .opacity(currentTab == tab ? 1 : 0)
                    }
                }

            }
        }
        .frame(maxWidth: .infinity)
    }
    .frame(height: 30)
    .padding(.bottom, 10)
    .padding([.top])
}
}

extension View {
func applyBG() -> some View {
    self
        .frame(maxWidth: .infinity, maxHeight: .infinity)
}
}