I believe it's SvelteKit's "reset focus" action which causes this. It will only happen for tutorials that have export const ssr = false (so, all Svelte tutorials and some SvelteKit tutorials), because only in that case the initial navigation is played, which in the end resets the focus. Not sure yet how to best counteract it (doing addEventListener and preventDefault doesn't seem to help). One possible way - if we can't prevent the focus action itself - could be to refocus the text editor (there are methods for doing that, and also for getting/setting the cursor position, in case that's needed).