it was related to the invoice template. Did you perform any change on the template when this started happening?
it could also be related to language files. Have you changed any language file recently?

this could be related to the invoice template not being properly formatted (I mean, the HTML code of the template)
did you change the default template? if so, can you check if maybe you left some html tag unclosed?

no, it's stock isis. Now trying Hathor, it's the same problem.

hi

no, I'm not talking about joomla's admin template. I was talking about the invoice template (inside invoice manager)

if you want, you can send me joomla admin access so I can take a look?

Did anyone ever get a solution to this? I'm having the same issue.

Hello, Germinal. I have sent you an email with all credentials to support@joomlathat.com. I'd greatly appreciate any help you could provide.

Hi Germinal

I'm having the same issue on two systems with a fresh install. I didn't manipulate the template content.
I use the actual versions of joomla and yootheme pro.

Thank you very much

Roger