Some tokens not working when this extension is enabled

Created by: magnolia61

When this extension is enabled some system tokens stop working (both in 2.3 and current master) Our most important being: {contact.email_greeting} But I will check for more. Strangely enough it is not an all-or-nothing situation: {contact.first_name} works ok

probably related to: https://github.com/mathavanveda/uk.co.vedaconsulting.gdpr/commit/7cda26751efc406659a0ad521674935d267c70fc ? Would this approach form the civitoken extension be helpfull? https://github.com/kainuk/nz.co.fuzion.civitoken/commit/47d511799b93b371367fb17e6aafb76f162f9c65