title: Sitecore WFFM : Creates a duplicate field section upon submission
body: <p>I tried almost every search combination I know for this issue over the internet; been reading articles that might help resolve the issue, but I wasn't able to find any help. </p>
  
  <p>Debugging (no exception during debug process), and reading logs doesn't give much information (no exceptions in the log file). </p>
  
  <p>If you know a post that is related to this, please comment below. Otherwise, let me give it a try here.   </p>
  
  <blockquote>
    <p><strong>Edited:</strong> Tried also in Sitecore Instance v.8.1 Update-2, same problem was encountered.</p>
  </blockquote>
  
  <p><strong>Let me describe the issue:</strong></p>
  
  <ul>
  <li>Using SC Instance v.8.0 Update-3 (freshly installed with no customizations)</li>
  <li>Using WFFM v.8.0 Update-2 (compatible with SC instance 8.0-U3)</li>
  </ul>
  
  <p>I have 11 field sections in a CONTACT US form page, here are:</p>
  
  <p>The <strong>Section A</strong> is the 1st field section and the <strong>Section K</strong> is the 11th field section of my Contact Us page.</p>
  
  <p><strong>Section A</strong></p>
  
  <ul>
  <li>A1 Single-line text field | NOT required</li>
  <li>A2 Single-line text field | NOT required</li>
  <li>A3 Single-line text field | NOT required</li>
  <li>A4 Single-line text field | NOT required</li>
  <li>A5 Single-line text field | NOT required</li>
  <li>A6 Single-line text field | NOT required</li>
  <li>A7 Single-line text field | NOT required</li>
  <li>A8 Single-line text field | NOT required</li>
  <li>A9 Single-line text field | NOT required</li>
  <li>A10 Single-line text field | NOT required</li>
  </ul>
  
  <p><strong>Section B</strong></p>
  
  <ul>
  <li>B1 Single-line text field | NOT required</li>
  <li>B2 Single-line text field | <strong>required WITH NUMBERS ONLY VALIDATION</strong></li>
  <li>B3 Single-line text field | <strong>required WITH NUMBERS ONLY VALIDATION</strong></li>
  <li>B4 Single-line text field | NOT required</li>
  <li>B5 Single-line text field | NOT required</li>
  <li>B6 Single-line text field | NOT required</li>
  <li>B7 Single-line text field | NOT required</li>
  <li>B8 Single-line text field | NOT required</li>
  <li>B9 Single-line text field | NOT required</li>
  <li>B10 Single-line text field | NOT required</li>
  </ul>
  
  <p><strong>Section C</strong></p>
  
  <ul>
  <li>C1 Single-line text field | NOT required</li>
  <li>C2 Single-line text field | NOT required</li>
  <li>C3 Single-line text field | NOT required</li>
  <li>C4 Single-line text field | NOT required</li>
  <li>C5 Single-line text field | NOT required</li>
  <li>C6 Single-line text field | NOT required</li>
  <li>C7 Single-line text field | NOT required</li>
  <li>C8 Single-line text field | NOT required</li>
  <li>C9 Single-line text field | NOT required</li>
  <li>C10 Single-line text field | NOT required</li>
  </ul>
  
  <p><strong>Section D</strong></p>
  
  <ul>
  <li>D1 Single-line text field | NOT required</li>
  </ul>
  
  <p><strong>Section E</strong></p>
  
  <ul>
  <li>E1 Single-line text field | NOT required</li>
  <li>E2 Single-line text field | NOT required</li>
  </ul>
  
  <p><strong>Section F</strong></p>
  
  <ul>
  <li>F1 Single-line text field | NOT required</li>
  <li>F2 Single-line text field | NOT required</li>
  </ul>
  
  <p><strong>Section G</strong></p>
  
  <ul>
  <li>G1 Single-line text field | NOT required</li>
  <li>G2 Single-line text field | NOT required</li>
  <li>G3 Single-line text field | NOT required</li>
  </ul>
  
  <p><strong>Section H</strong></p>
  
  <ul>
  <li>H1 Single-line text field | NOT required</li>
  <li>H2 Single-line text field | NOT required</li>
  <li>H3 Single-line text field | NOT required</li>
  <li>H4 Single-line text field | NOT required</li>
  </ul>
  
  <p><strong>Section I</strong></p>
  
  <ul>
  <li>I1 Single-line text field | NOT required</li>
  <li>I2 Single-line text field | NOT required</li>
  <li>I3 Single-line text field | NOT required</li>
  <li>I4 Single-line text field | NOT required</li>
  </ul>
  
  <p><strong>Section J</strong></p>
  
  <ul>
  <li>J1 Single-line text field | NOT required</li>
  <li>J2 Single-line text field | NOT required</li>
  <li>J3 Single-line text field | NOT required</li>
  <li>J4 Single-line text field | NOT required</li>
  </ul>
  
  <p><strong>Section K</strong></p>
  
  <ul>
  <li>K1 Single-line text field | NOT required</li>
  <li>K2 Single-line text field | NOT required</li>
  <li>K3 Single-line text field | NOT required</li>
  <li>K4 Single-line text field | NOT required</li>
  </ul>
  
  <hr>
  
  <p><strong>As shown above, there are only two (2) required fields, they are:</strong></p>
  
  <ol>
  <li>B2 - accepts numbers only</li>
  <li>B3 - accepts numbers only</li>
  </ol>
  
  <p>And the rest are optional, and can leave blank.</p>
  
  <p><strong>My ultimate goal</strong>: Just fill up the required fields, and submit the form! (Looks pretty straight forward, isn't it?)</p>
  
  <p>But the problem here is, when you submitted the form page. The page will reload and creates a duplicate <strong>Section B</strong> at the bottom of the page and the <strong>Section K</strong> will be removed also. Something like this:</p>
  
  <p><a href="https://i.stack.imgur.com/FYm8s.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/FYm8s.jpg" alt="enter image description here"></a></p>
  
  <p>Surprisingly, when I deleted one (1) section to make it a total of 10 sections OR less than 10 sections then submit the form, the form will be submitted successfully and I would able to see an entry in the reporting database and in form report page.</p>
  
  <p><a href="https://i.stack.imgur.com/nSCF2.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/nSCF2.jpg" alt="enter image description here"></a></p>
  
  <hr>
  
  <p>Anyone encountered this kind of issue before? Is this a known issue? Or a bug?</p>
  
  <p><strong>Things that I least wanted to try, but just to give a shot:</strong></p>
  
  <ol>
  <li><p>Clear browser cache, check in most browsers (Firefox, IE and Chrome) - Didn't work</p></li>
  <li><p>IISReset - Didn't work either.</p></li>
  </ol>
  
  <p><strong>Supporting files:</strong></p>
  
  <p>Video: <a href="http://screencast.com/t/wtgh2b8M1U" rel="nofollow noreferrer">http://screencast.com/t/wtgh2b8M1U</a></p>
  
  <p>I packaged the form for whoever wanted to try it on their local machine </p>
  
  <p>OneDrive > Download <a href="https://1drv.ms/u/s!Ajr_7Ne_eB0ula4KVE1DAS0BXmxfPw" rel="nofollow noreferrer">here</a>. - Do not forget to add section K once installed.</p>
  
  <blockquote>
    <p>Appreciate your time and effort. Thanks</p>
  </blockquote>