Documents and Media basic document doesn't remove category

• Type: Bug
• Status: Closed
• Resolution: Fixed
• Affects Version/s: Master
• Fix Version/s: Master
• Component/s: WCM > API > Asset Framework
• Labels: None
• Fix Priority: 3
• Git Pull Request: https://github.com/brianchandotcom/liferay-portal/pull/70810

Steps to reproduce:

1. Create a basic document
2. Create a vocabulary and a category inside that vocabulary
3. Modify document, add created category
4. Refresh page 
5. Edit document, remove category

Expected result:

Category is removed from document

Actual result:

Category is not removed from document

Reproduced on:

Tomcat 9.0.10 + MySQL 5.7.

Portal Master GIT Commit: 7ee0a568d6a06b3c5f5c34c44b4577f67db07bbb