title: Buttons and Drop Downs duplicating in IE11 Word Add-in
body: <p>I have a Word 2016 Add-in (Office.js) built with Bootstrap 3 and jquery.</p>
  
  <p>Windows 7 users are reporting (and I've seen) duplication and even triplication of buttons and dropdown menus when they return to Word 2016 after letting it sit for 45 minutes or so.</p>
  
  <p>If you just refresh the page you get a correct, single version of these buttons and dropdowns.</p>
  
  <p>Somehow IE11 is deciding on its own to update the page and, in doing so, creating duplicates.</p>
  
  <p>The buttons and dropdowns all work. Refresh returns the page to the correct state.</p>
  
  <p>Anyone have any direction to go or ideas on this?</p>
  
  <hr>
  
  <p>Thank you for the detailed response &amp; interest - apologies for the long delay in responding.</p>
  
  <p>I've only seen this with one user, in the UK, running Windows 7 and Word 2016. I screenshared with him and saw the triplication in person...unfortunately didn't think to take screenshots of his experience. His IE11 install didn't have the "Install new versions automatically" checkbox that I have (Windows 10).</p>
  
  <p>(Side note: the permutations of Word 2016 and IE11 are ending up being quite a handful - I have many institutional users and they don't control updates to one or both...hard to even figure out what they're using).</p>
  
  <p>He had three versions of every Favorite button and three versions of each Group Drop Down.</p>
  
  <p>A simple refresh of the page returned things to normal.</p>
  
  <p>The buttons all worked while the dropdowns had all 3 sets of choices in the first iteration of the dropdown; the second and third iteration of a dropdown was empty.</p>
  
  <p>He described the situation as resulting after he "lets Word sit without using it or my solution for 40+ minutes." He has used my solution extensively and hasn't reported seeing it during use.</p>
  
  <p>The screenshot below shows things as they are normally.</p>
  
  <p>In his situation, that first button (for example) named 'Link' would repeat after the list of buttons along with every single other blue Favorite button. </p>
  
  <p>The Dropdowns (Argument etc.) would be similarly duplicated or triplicated (he hasn't seen 4 yet).</p>
  
  <p>My code is pretty simple jquery/javascript. When you load the page or refresh it pulls content and builts these buttons and dropdowns dynamically. I don't understand a situation where the browser somehow reloads or duplicates content...</p>
  
  <p><a href="https://i.stack.imgur.com/Wt4xZ.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/Wt4xZ.png" alt="Annotate Favorite Buttons and Dropdown Menus"></a></p>