Close icon for Adding portlets menu turns gray after changing pages

• Type: Bug
• Status: Closed
• Resolution: Fixed
• Affects Version/s: 7.0.X
• Fix Version/s: 7.0.0 DXP FP59, 7.0.0 DXP SP9, 7.0.X
• Component/s: Frontend Infrastructure
• Labels:
  • 7.0.x-only
  • ee-7.0.x-only
  • ee-ts
  • liferay-dxp-70-sp9
  • liferay-fixpack-de-59-7010
• Branch Version/s:
  7.0.x
• Backported to Branch:
  Committed
• Story Points: 0.25
• Fix Priority: 3
• Git Pull Request: https://github.com/liferay/liferay-portal-ee/pull/9503

After changing pages within a site, the close icon ("X") for adding portlets or the simulation menu changes from white to gray, which is difficult to see.

Steps to reproduce
1. Start up DXP in IE11
2. Create a new page.
3. Go to the first page and open the "Add" button to add a portlet. Verify that the "X" is white
5. Navigate to the second page and open the "Add" button

Results of Testing
Expected Results: The close icon button is still white
Actual Results: The close icon button is gray