Check-Box issue

Hi,
there is an issue if a Check-Box is set as a required field, e.g. to accept something.
The following happens when pressing the Submit/Send button:
-Check-Box checked: The general error message (which is set in the form settings “Message, Text and Button Label”) and also the field specific error message (#Checkboxtext|err:ERRORMESSAGE) are shown below the send button.
-Check-Box not checked: Only the general error message (which is set in the form settings “Message, Text and Button Label”)is shown below the send button. The field specific error message is NOT shown but the checkbox field is colored red.

It looks like that something got mixed up in Version 14.11.4

The form is working properly if the Check-Box is not set as reuired.
I’m using the same form over the last years and it worked properly so far.

https://ww.wp.xz.cn/plugins/cforms2/