[bug] Default window shadows missing on macOS with Tauri v2.0.0-alpha.8

[stephenlrandall]

Describe the bug

In the latest Tauri alpha (v2.0.0-alpha.8) on macOS, window shadows are missing. Below is a screenshot of the same application, built using v1.3.0 and v2.0.0-alpha.8.

Using "shadow": true in the tauri.windows section of tauri.conf.json restores the expected behavior, suggesting that the default was flipped in Tauri v2.

Reproduction

Create a windowed application in Tauri on macOS with v2.0.0-alpha.8.

Expected behavior

I expect the window to have the same default shadow that all other macOS windows have.

Platform and versions

[✔] Environment
    - OS: Mac OS 13.3.1 X64
    ✔ Xcode Command Line Tools: installed
    ✔ rustc: 1.69.0 (84c898d65 2023-04-16)
    ✔ Cargo: 1.69.0 (6e9a83356 2023-04-12)
    ✔ rustup: 1.26.0 (5af9b9484 2023-04-05)
    ✔ Rust toolchain: stable-x86_64-apple-darwin (default)
    - node: 18.4.0
    - pnpm: 8.4.0
    - npm: 8.19.2

[-] Packages
    - tauri [RUST]: 2.0.0-alpha.8
    - tauri-build [RUST]: 2.0.0-alpha.4
    - wry [RUST]: 0.27.3
    - tao [RUST]: 0.18.3
    - @tauri-apps/api [NPM]: 2.0.0-alpha.3
    - @tauri-apps/cli [NPM]: 2.0.0-alpha.8

[-] App
    - build-type: bundle
    - CSP: unset
    - distDir: ../build
    - devPath: http://localhost:3000/
    - framework: Svelte
    - bundler: Vite

Stack trace

No response

Additional context

No response