On Windows I noticed for my Tauri app I had to use this https://v2.tauri.app/distribute/windows-installer/#embedded-... (https://github.com/kzahel/jstorrent/commit/10cc1c53#diff-f61...) even on a new windows 11 install for the webview to work, but my app seems to work fine otherwise on all platforms (I only tested Ubuntu desktop though, ha).
Electrobun sounds really cool, glad to see there's more work done to enable cool desktop apps without Electron.