Editing a Web Content's Categories does not show the currently selected Categories

• Type: Bug
• Status: Closed
• Resolution: Fixed
• Affects Version/s: 7.2.X
• Fix Version/s: 7.2.10 DXP FP5, 7.2.10.2 DXP SP2, 7.2.X
• Component/s: Categories
• Labels:
  • ee-ts
  • liferay-dxp-72-sp2
  • liferay-fixpack-dxp-5-7210
• Branch Version/s:
  7.2.x
• Backported to Branch:
  Committed
• Fix Priority: 3
• Git Pull Request: https://github.com/liferay/liferay-portal-ee/pull/18829

Description

When editing an article and you click on select categories (which can have multiple values), all the existing categories are deselected. This would be a problem for editors as they need to remember all the categories associated before adding/deleting a category

Steps to Reproduce
1. Go to Site Content -> Categorization -> Categories
2. Add a new Vocabulary called Test
3. Add 3 categories in Test - A, B, C
4. Create a new Basic web content
5. Under Metadata > Search category, click on Select
6. This opens a new popup window which allows user to select the categories
8. Select all three categories and click on Add
9. Click on Publish.
10. Go back to edit the same web content
11. Under Metadata, click on Select
Result: The categories are no longer selected (not highlighted blue)
Expected: All three categories are still selected as they were selected upon publishing.

Errors
None

Testing
Reproduced with 7.2 DXP-2 and http://files.liferay.com/private/ee/fix-packs/7.2.10/hotfix/liferay-hotfix-1063-7210.zip
Reproduced with 72x-20200320

Not reproduced in 7.2 DXP-4
Not reproduced in 7.2 DXP-2 (no hotfix)
Not reproduced in master-20200320