I seem to have an issue with the mails I send. Everytime I edit the text of a mail, script tags appear at the end, in every text box of the mail, which prevents me from approving the mail. If I delete them all, then approve the mail, but need to edit something else, those script tags will come back and I need to remove them again, even in boxes that I haven't opened during the editing.
You can see the kind of script tags I have in the screenshot attached.
I haven't found anything online, only one person had a smiliar issue, but nothing else.
Can you help?