[random_ind_dude]

I think it may be a good idea to either enable auto-save or remind the user that there are unsaved changes before navigating away from the page.

[liu3hao]

Yes, that's true, right now you have to manually press on the Save button. I will update the online editor to auto-save after some time and probably also prompt the user to save before navigating as well too. Thank you very much for your feedback!