[bug] Cannot center window

[fnune]

Describe the bug

I've seen this other issue: https://github.com/tauri-apps/tauri/issues/4777

I'm trying to center my window like this:

  "app": {
    "windows": [
      {
        "title": "Flash",
        "decorations": false,
        "center": true
      }
    ]
  }

But it opens in the top-left corner:

I can also try to hide it and then center it in Rust, following the tips from the aforementioned issue, but that doesn't work either (same result):

  "app": {
    "windows": [
      {
        "title": "Flash",
        "decorations": false,
        "center": true,
        "visible": false
      }
    ]
  }

In Rust:

#![cfg_attr(not(debug_assertions), windows_subsystem = "windows")]

use tauri::Manager;

fn main() {
    tauri::Builder::default()
        .setup(|app| {
            let main_window = app.get_webview_window("main").unwrap();
            tauri::async_runtime::spawn(async move {
                main_window.show().unwrap();
                main_window.center().unwrap();
            });
            Ok(())
        })
        .invoke_handler(tauri::generate_handler![])
        .run(tauri::generate_context!())
        .expect("error while running tauri application");
}

Reproduction

{
  "build": {
    "beforeDevCommand": "pnpm dev",
    "beforeBuildCommand": "pnpm build",
    "frontendDist": "../dist",
    "devUrl": "http://localhost:1420"
  },
  "bundle": {
    "active": true,
    "targets": "all",
    "icon": [
      "icons/32x32.png",
      "icons/128x128.png",
      "icons/128x128@2x.png",
      "icons/icon.icns",
      "icons/icon.ico"
    ]
  },
  "productName": "flash",
  "version": "0.1.0",
  "identifier": "com.fnune.flash",
  "plugins": {},
  "app": {
    "windows": [
      {
        "title": "Flash",
        "decorations": false,
        "center": true,
        "visible": false
      }
    ]
  }
}

#![cfg_attr(not(debug_assertions), windows_subsystem = "windows")]

use tauri::Manager;

fn main() {
    tauri::Builder::default()
        .setup(|app| {
            let main_window = app.get_webview_window("main").unwrap();
            tauri::async_runtime::spawn(async move {
                main_window.show().unwrap();
                main_window.center().unwrap();
            });
            Ok(())
        })
        .invoke_handler(tauri::generate_handler![])
        .run(tauri::generate_context!())
        .expect("error while running tauri application");
}

Expected behavior

Expecting more or less this:

Full tauri info output

~/Development/flash => pnpm tauri info

> flash@0.1.0 tauri /home/fausto/Development/flash
> tauri "info"

[✔] Environment
    - OS: NixOS 24.05 X64
    ✔ webkit2gtk-4.1: 2.44.3
    ✔ rsvg2: 2.58.2
    ✔ rustc: 1.80.1 (3f5fd8dd4 2024-08-06)
    ✔ cargo: 1.80.1 (376290515 2024-07-16)
    ✔ rustup: 1.27.1 (1980-01-01)
    ✔ Rust toolchain:
    - node: 20.15.1
    - pnpm: 9.7.0
    - npm: 10.7.0

[-] Packages
    - tauri [RUST]: 2.0.0-rc.6
    - tauri-build [RUST]: 2.0.0-rc.6
    - wry [RUST]: 0.42.0
    - tao [RUST]: 0.29.1
    - @tauri-apps/api [NPM]: 2.0.0-rc.3
    - @tauri-apps/cli [NPM]: 2.0.0-rc.7

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

### Stack trace

_No response_

### Additional context

_No response_

[Legend-Master]

Duplicated with #9768