I found out that volt is messing with my angularjs model tags.
In this question: https://stackoverflow.com/questions/13671701/angularjs-twig-conflict-with-double-curly-braces
An person says:
Another twig-specific solution for moustache madness is to use the verbatim tag; e.g:{% verbatim %}{{ angular_var }}{% endverbatim %} to preserve your moustaches for AngularJS:
How can I do this in volt?