"Object doesn't support property or method 'closest' " error while creating new page or blog entry

• Type: Regression Bug
• Status: Closed
• Resolution: Fixed
• Affects Version/s: 6.2.X EE
• Fix Version/s: 6.2.X EE
• Component/s: Forms, ~ [Archived] Frontend Infrastructure
• Labels:
  • QA-NA
  • ee-6.2.x-only
  • ee-ts
  • fw_test_not_needed
  • liferay-fixpack-portal-131-6210
• Branch Version/s:
  6.2.x
• Backported to Branch:
  Committed
• Story Points: 1
• Fix Priority: 5
• Browsers:
  Edge (latest), Edge 25, Internet Explorer 11
• Git Pull Request: https://github.com/brianchandotcom/liferay-portal-ee/pull/15373

Reproduction steps:

1) Get 6.2 vanilla, patch it with portal-125-6210 or 126/127, start it
2) On IE11 browser (any versions) or Edge, login as Admin and go to Admin > Site Administration > Pages
3) Click on Add Page to add e.g. a public page
Expected: Operation to be possible, Add Page form to pop-up
Actual behavior: Nothing happens, there will be an error on the Dev console:

SCRIPT438: Object doesn't support property or method 'closest'
File: everything.jsp, Line: 3, Column: 92754

OR

3) Add blog portlet and add a blog entry
4) Enter a title, text, and press Publish.

Actual Result: Nothing happens. See the console (developer tool) script error: SCRIPT438: Object doesn't support property or method 'closest'

Expected Result: Blog is created.

Branch:
Reproduced on ee-6.2.x @ 2b6fbb436fbebcffc9721ef4570ce0b72e343c24

Master:
Not reproducible @ 01e9a631f6620eecb1faf0f1714e96f501d041f2. The interface is completely different and it may not be affected at all though

Not reproducible on portal-124-6210