When you click publish and are invited to post a comment to accompany the post, several times I've been typing and then triggered a page navigation event which clears the data. Perhaps we could warn the users before they do this?
I pushed up an untested branch here but apologies I'm new to Tangled and don't yet know how to make a PR.
Alternative
Store the draft comment in the localStorage and reload from that on page load. I didn't try this as I was concerned about the potential for leaking user sensitive data on public machines.
p.s. great library! Thanks so much for this. Been really enjoying it so far.