Initialize main window with visible: false to prevent white flash (#4177)

apps/app/src/main.rs

@@ -191,6 +191,11 @@ fn main() {
         .plugin(
             tauri_plugin_window_state::Builder::default()
                 .with_filename("app-window-state.json")
+                // Use *only* POSITION and SIZE state flags, because saving VISIBLE causes the `visible: false` to not take effect
+                .with_state_flags(
+                    tauri_plugin_window_state::StateFlags::POSITION
+                        | tauri_plugin_window_state::StateFlags::SIZE,
+                )
                 .build(),
         )
         .setup(|app| {

apps/app/tauri.conf.json

@@ -67,7 +67,7 @@
 				"width": 1280,
 				"minHeight": 700,
 				"minWidth": 1100,
-				"visible": true,
+				"visible": false,
 				"zoomHotkeysEnabled": false,
 				"decorations": false
 			}