Document Selection popup window from link in AlloyEditor shows JS error

• Type: Bug
• Status: Closed
• Resolution: Fixed
• Affects Version/s: 7.0.X, Master
• Fix Version/s: 7.0.0 DXP FP60, 7.0.0 DXP SP9, 7.0.X, 7.1.10 DXP FP3, 7.1.1 CE GA2, 7.1.10.1 SP1, 7.1.X, Master
• Component/s: Alloy Editor
• Labels:
  • ee-ts
  • liferay-dxp-70-sp9
  • liferay-dxp-71-sp1
  • liferay-fixpack-de-60-7010
  • liferay-fixpack-dxp-3-7110
• Branch Version/s:
  7.1.x, 7.0.x
• Backported to Branch:
  Committed
• Story Points: 0.25
• Fix Priority: 3
• Git Pull Request: https://github.com/brianchandotcom/liferay-portal/pull/63483

Steps to reproduce

1. Access Liferay in a non-Webkit browser (Firefox was used for this testing, but it is also reproducible on MS Edge and Internet Explorer).
2. Add a document to the documents and media portlet with an image
3. Go to Content --> Web Content and add a new basic web content.
4. Enter the following information in the source view of the content

<ul>
<li><a href="http://www.google.com">abc def</a></li>
<li><a href="http://www.google.com">ghi jkl</a></li>
</ul>

5. Go back to the text view and select one of the created links and click the folder icon
6. Select one of the documents uploaded earlier and a window pops up

Results of Testing

Expected Results: You can select the add button in the popup window
Actual Results: The add button does not work and produces a IndexSizeError: Index or size is negative or greater than the allowed amount error in the browser console.