Thanks for your time Jose!!
After searching several days for the solution, I actually found the problem today accidently and on my own 🙂 It was just an angular problem.
I included the wordpress content via angular. I used the ng-bind-html Attribute for it. With the compile-directive (see link below) the input fields and javascript works fine again!!
Please see here how the compile directive works.
ng-click on element inserted using ng-bind-html not firing
byu/jp246 inangularjs
