Right now if you edit a post then navigate away from the edit screen you lose ALL of your changes, with no warning.

This is really frustrating and can easily have someone lose hours of work if they're not careful.

It'd be great if changes could be added to local storage or something like that, so that navigating away won't cause the changes to be lost. Maybe even an auto-save.

At the very least, some navigation warning about losing all unsaved changes would be very helpful