Comments from previous invoices carry on to the next invoice.

Steps to reproduce bug:

1. In the invoice creation screen, type a comment in the Comments field.

2. Create the invoice.

3. Create another invoice, and the comment will still be there.

Even if you delete the comment before clicking the Create button, the comment will reappear in the next created invoice. The only workaround I have found is to replace the comment with a space. That way, the space will still get carried over to the next invoice, but at least you won't see it.

This is really annoying, and potentially embarrassing. I used the comment field to note some discounts for a client recently, for example, and almost included that note with an invoice that didn't include any discounts, which could have lead to some awkward explanations.

I have been bitten by the same bug. It's especially irritating because Billings doesn't seem to let me edit an invoice once it has been created: if I "edit" the invoice and change the comment, the invoice still prints with the comment on it.