Why can't angular process elements if id and class are present?

Question

Angular

<div>
      <ul id="dropdown2" class="dropdown-content2">

        <li ng-repeat="task in tasks">
        	<a><b> {{ task.caption }} </b></a>
        </li>
        
      </ul>
    </div>

Error:
angular.min.js:117 TypeError: Cannot read property 'parent' of undefined Removing
id works but I need id

Answer 1

In a "clean" application, everything works. So the problem is in the environment.
Have you tried checking the call stack.
Perhaps some code is being executed that crashes.
Perhaps you have a directive named dropdownContent2 bound by the class name.