The compare versions modal will be generated multiple iframes when comparing the edited wiki page

• Type: Regression Bug
• Status: Closed
• Resolution: Fixed
• Affects Version/s: Master
• Fix Version/s: 7.3.5 CE GA6, 7.3.10 DXP GA1, Master
• Component/s: Knowledge Base widget, Wiki
• Labels: None
• Story Points: 1
• Fix Priority: 4
• Last Working Version:
  7.3.4 CE GA5
• Git Pull Request: https://github.com/liferay-lima/liferay-portal/pull/684

Steps to reproduce:

1. Go to site admin> content & data> wiki> main
2. Add a new wiki page
3. Edit this wiki page
4. Check this entry
5. Click info icon
6. Change the dropdown list to versions
7. Compare to version 1.1
8. View the HTML

Expected Result:

1. The console will generate an iframe for the compare versions modal
2. The modal will be closed after the user clicks the close button 1 time 

Actual Result:

1. The console will generate 4 iframes for the compare versions modal
2. The modal will be closed after the user clicks the close button 4 times