Problem with email template when send reccuring invoice

first of all i am new to invoiceplane
i have a problem with email template
when i create invoice and send mail all its ok (css)
but when comes the date of reccuring the css “lost” and put the css code as text in the mail

version 1.4.3

(sorry for my english its not very well)

Added an issue report for that:
https://development.invoiceplane.com/browse/IP-331