[Plugin: Contact Form 7] Problem with checkboxes in mail since update to 3.1.1

Hi!

Since I updated to CF 3.1.1 today the following problem occurs:

If a checkbox is NOT checked, it’s name is entered into the generated mail.

E.g.:

[checkbox checkbox-123 “This is a test|TEST”]

should enter “TEST” into the mail if checked and nothing if unchecked. First one is still working fine, but since the update it enters “[checkbox-123]” (with brackets) into the mail if unchecked.

https://www.ads-software.com/extend/plugins/contact-form-7/