fix FB

src/client/js/components/Admin/Security/LocalSecuritySetting.jsx

@@ -138,8 +138,7 @@ class LocalSecuritySetting extends React.Component {
                     className="form-control"
                     type="textarea"
                     name="registrationWhiteList"
-                    placeholder={adminGeneralSecurityContainer.state.registrationWhiteList}
-                    defaultValue={adminGeneralSecurityContainer.state.registrationWhiteList}
+                    value={adminGeneralSecurityContainer.state.registrationWhiteList}
                     onChange={e => adminGeneralSecurityContainer.changeRegistrationWhiteList(e.target.value)}
                   />
                   <p className="help-block small">{ t('security_setting.restrict_emails') }<br />{ t('security_setting.for_instance') }

src/client/js/services/AdminGeneralSecurityContainer.js

@@ -53,7 +53,7 @@ export default class AdminGeneralSecurityContainer extends Container {
       wikiMode: generalSetting.wikiMode || '',
       isLocalEnabled: localSetting.isLocalEnabled || false,
       registrationMode: localSetting.registrationMode || 'open',
-      registrationWhiteList: localSetting.registrationWhiteList || '',
+      registrationWhiteList: localSetting.registrationWhiteList.join('\n') || '',
     });
   }