bug with wysiwyg field named "head"

this is what happens when you edit an entity that have a field named "head":

instead of the content of that field you see that snippet of code. in show view you don't see anything but get lots of errors in the js console, like this one:

 TypeError: undefined is not a function
    at a.$inject (http://localhost:3000/public/vendor/ng-admin/ng-admin.min.js:4:5623)
    at http://localhost:3000/public/components/angular/angular.min.js:194:11
    at l.$get.xa.(anonymous function) [as value] (http://localhost:3000/public/components/angular/angular.min.js:59:175)
    at hb.functionCall (http://localhost:3000/public/components/angular/angular.min.js:198:426)
    at Object.<anonymous> (http://localhost:3000/public/components/angular/angular.min.js:108:188)
    at l.$get.l.$digest (http://localhost:3000/public/components/angular/angular.min.js:123:401)
    at l.$get.l.$apply (http://localhost:3000/public/components/angular/angular.min.js:126:471)
    at http://localhost:3000/public/components/angular/angular.min.js:139:187
    at e (http://localhost:3000/public/components/angular/angular.min.js:40:339)
    at http://localhost:3000/public/components/angular/angular.min.js:44:375
TypeError: Cannot read property 'replace' of undefined
    at a.$inject (http://localhost:3000/public/vendor/ng-admin/ng-admin.min.js:4:5622)
    at http://localhost:3000/public/components/angular/angular.min.js:194:11
    at l.$get.xa.(anonymous function) [as value] (http://localhost:3000/public/components/angular/angular.min.js:59:175)
    at hb.functionCall (http://localhost:3000/public/components/angular/angular.min.js:198:426)
    at Object.<anonymous> (http://localhost:3000/public/components/angular/angular.min.js:108:188)
    at l.$get.l.$digest (http://localhost:3000/public/components/angular/angular.min.js:123:401)
    at l.$get.l.$apply (http://localhost:3000/public/components/angular/angular.min.js:126:471)
    at http://localhost:3000/public/components/angular/angular.min.js:139:187
    at e (http://localhost:3000/public/components/angular/angular.min.js:40:339)
    at http://localhost:3000/public/components/angular/angular.min.js:44:375

Reproduce the issue with an entity field named "head" in the WYSIWYG edit and show views, then inspect the JavaScript console errors shown in the report. Done means the field displays its content in edit view, appears in show view, and no related console errors occur.