CanJS incorrectly places elements in table row

After rendering this HTML in CanJS, 'tests' elements got placed before table and not after previous cell as it is supposed to be:

<thead>
  <tr>
    <th>Test</th>
    <th><input type="button" value="Test"></th>
    {{#tests}}
      <th>{{name}}</th>
    {{/tests}}
  </tr>
</thead>

Problem was that input tag was not closed, which is usually fine with HTML, but confuses CanJS. After closing it, everything was working as expected.