Web Content from other site doesn't display under web content display

• Type: Regression Bug
• Status: Closed
• Resolution: Fixed
• Affects Version/s: Master
• Fix Version/s: 7.3.4 CE GA5, 7.3.10 DXP GA1, Master
• Component/s: Content Display Widgets > Web Content Display widget
• Labels:
  • 7.3-blocker
  • QA-AUTOMATION
  • backend_test
• Fix Priority: 4
• Git Pull Request: https://github.com/liferay-echo/liferay-portal/pull/1808
• QA Test Name:
  • LocalFile.WebContentDisplay#DisplayWebContentFromOtherSite
• QA Test Score: 5

Reproduction steps:
1. Create Site "A"
2. Create a Web Content
3. Create Site "B"
4. Put a Web Content Display to a page, select the Web Content from Site "A"

Result:
Web Content from Site "A" doesn't display in WCD.

Expected:
Web Content from Site "A" should display in WCD.