try this (#465)

Author: Rich-Harris

packages/editor/src/lib/Editor.svelte

@@ -90,7 +90,6 @@
 	}}
 	onmessage={(e) => {
 		if (preserve_editor_focus && e.data.type === 'iframe_took_focus') {
-			console.log('reclaiming focus');
 			editor_view.focus();
 		}
 	}}

packages/editor/src/lib/Workspace.svelte.ts

@@ -302,7 +302,11 @@ export class Workspace {
 
 	update_file(file: File) {
 		if (file.name === this.#current.name) {
-			this.#current = file;
+			// TODO this line causes the editor to keep losign
+			// focus and I have no idea why. It seems important,
+			// but it also doesn't appear to break anything
+			// if we comment it out?
+			// this.#current = file;
 		}
 
 		this.#files = this.#files.map((old) => {