The HTML that is created in webui causes note saving to fail

An attempt to create bulletted list with the following structure results in "Opening and ending tag mismatch: li line 1 and ul, line 1, column 171"

"""
Testing saving note 1

Testing saving note 2

    * 1
          o 1.1
                + 1.1.1
          o 1.2
    * 2
          o 2.1
                + 2.1.1
                      # 2.1.1.1
                + 2.1.2
          o 2.2
                + 2.2.1
                + 2.2.2
    * 3
    * 4
    * 5
"""

The HTML generated is:

"""
Testing saving note 1
<br>
<br>
Testing saving note 2
<br>
<br>
<ul>
  <li>1</li>
  <li>
    <ul>
      <li>1.1</li>
      <li>
        <ul>
          <li>1.1.1</li>
        </ul>
        <li>1.2</li>
      </ul>
      <li>2</li>
      <li>
       <ul>
         <li>2.1</li>
         <li>
           <ul>
             <li>2.1.1</li>
             <li>
               <ul>
                 <li>2.1.1.1</li>
               </ul>
               <li>2.1.2</li>
             </ul>
             <li>2.2</li>
             <li>
               <ul>
                 <li>2.2.1</li>
                 <li>2.2.2</li>
               </ul>
             </ul>
             <li>3</li>
             <li>4</li>
             <li>5</li>
           </ul>
"""
As you can see, the tree is not balanced. This causes internal server error and inability to save the note.