[bug] Window loses focus when creating another window with `focus: false`, possible deadlock when re-focusing main window manually

[andrepav1]

Describe the bug

We want to be able to create a second window on the onFocus event in a React input component, while keeping the same input focused.

Seems like the intended way of doing this is setting the focus property to false, but this doesn't seem to do the trick.

We also tried using setFocus() inside the "tauri://created" listener to re-focus the primary window manually but this seems to cause a deadlock, as the cursor in the input is blinking but the first button pressed does not register.

Reproduction

1. Go to repo https://github.com/Andrepav1/tauri-multi-window
2. Run yarn && yarn start
3. Run tauri dev
4. Focus input component and wait window creation
5. Press any key

Expected behavior

Create the window, while keeping the focus on the input component.

Platform and versions

Environment
› OS: Windows 10.0.19044 X64
› Webview2: 104.0.1293.70
› MSVC:
- Visual Studio Build Tools 2022
› Node.js: 16.15.0
› npm: 8.5.5
› pnpm: 7.1.0
› yarn: 1.22.15
› rustup: 1.25.1
› rustc: 1.62.1
› cargo: 1.62.1
› Rust toolchain: stable-x86_64-pc-windows-msvc

Packages
› @tauri-apps/cli [NPM]: 1.0.5
› @tauri-apps/api [NPM]: 1.0.2
› tauri [RUST]: 1.0.5,
› tauri-build [RUST]: 1.0.4,
› tao [RUST]: 0.12.2,
› wry [RUST]: 0.19.0,

App
› build-type: bundle
› CSP: default-src blob: data: filesystem: ws: http: https: 'unsafe-eval' 'unsafe-inline' 'self' img-src: 'self'
› distDir: ../build
› devPath: http://localhost:3000/
› framework: React

App directory structure
├─ .git
├─ node_modules
├─ public
├─ src
└─ src-tauri

Stack trace

no stack trace

Additional context

No response

[dannyvaughton]

I've been seeing this issue too.

Creating a new window with focus: false, whether visible or not, will still cause the window to lose focus. I've also tried running the setFocus manually afterward, but it does not seem to bring it back into focus. I believe it's because Tauri thinks the window is still in focus, when it's not. I'm assuming this because once you manually blur the window, the setFocus then works.

[amrbashir]

the focus was introduced briefly but has been removed from tao. I think we just forgot to remove it from tauri too. cc @lucasfernog

[lucasfernog]

You're right @amrbashir I guess we could change it to use set_focus now.

[amrbashir]

we can't, set_focus can only grab focus not lose it. this has to be done when first creating the window at least on Windows. I plan to add that back once we migrate to winit but for now we need to remove this option.