Hi,
See also SAP Note 1310136 UI fields contain text "... not bound".
According to SAP Standard design, this information is automatically shown if the user is allowed to debug and the client independent customizing is changeable in the system.
If you want to make proposals for improvements of the SAP standard design, take advantage of the Customer Connection Program and visit https://influence.sap.com/crm2016. For example, the information should be only shown if the parameter is set.
Best Regards,
Sigrid