Honestly, this one is maddening. I saw someone else posted about this but it didnt get enough votes. When you're operating in the handouts dialogue, writing notes, a simple mis-click can just close the window without saving changes. No drafts no nothing. I'm writing this as I just lost about 45 minutes of work because i mustve accidentally tapped somewhere and it closed the window and i lost everything. Please add a dialogue of 'are you sure you want to exit? youll lose any unsaved changes." so that misclicks like this arent as fatal to editing content. That or start saving drafts of content and autosaving. This lack of error-proofing makes me not want to use this feature at all.