Unhandled Promise Rejection: webview not found: invalid label or it was closed | Tauri Apps | Page 1

This error appeared in webview's console.
Why is this error appearing and how to solve it?

In my real app, I want to the button be shown if and only if the new window is not opened.
I managed to do that with onCloseRequested, but met this issue.

minimal reproduction:

pnpm create tauri-app
add "window": { "all": true } in allowlist in tauri in tauri.conf.json
add below in App.tsx

import { WebviewWindow } from "@tauri-apps/api/window";

<input
  type="button"
  onClick={() => {
    const wv = new WebviewWindow("a", { url: "../index.html" });
    wv.onCloseRequested(() => {});
  }}
  value="new"
/>

pnpm tauri dev
click the button above, a window will appear
close the new window, the error message appears in the main window's console

pnpm tauri info

[✔] Environment
    - OS: EndeavourOS Rolling Release X64
    ✔ webkit2gtk-4.0: 2.42.4
    ✔ rsvg2: 2.57.1
    ✔ rustc: 1.75.0 (82e1608df 2023-12-21)
    ✔ cargo: 1.75.0 (1d8b05cdd 2023-11-20)
    ✔ rustup: 1.26.0 (2023-11-14)
    ✔ Rust toolchain: stable-x86_64-unknown-linux-gnu (default)
    - node: 21.6.0
    - pnpm: 8.14.1
    - npm: 10.3.0

[-] Packages
    - tauri [RUST]: 1.5.4
    - tauri-build [RUST]: 1.5.1
    - wry [RUST]: 0.24.7
    - tao [RUST]: 0.16.6
    - @tauri-apps/api [NPM]: 1.5.3
    - @tauri-apps/cli [NPM]: 1.5.9

[-] App
    - build-type: bundle
    - CSP: unset
    - distDir: ../dist
    - devPath: http://localhost:1420/
    - framework: React
    - bundler: Vite

#Unhandled Promise Rejection: webview not found: invalid label or it was closed