Hey @Sheena Milne65! Are you editing from the Visual Automation screen (i.e. clicking on the Sequence step in the automation, and then making your edits where it opens up on the right?)
If so, I'd actually recommend making edits to your Sequences by clicking into them via the Sequences page73, instead. That'll take you to a dedicated page to edit your Sequence on, rather than within the automation.
There's still no auto-save function, but it might be easier to prevent accidentally navigating away from there, than on that Visual Automation side-window. I hope that helps a bit! And I'm sorry for the trouble!