Layout builder gets broken when a field from it is deleted

• Type: Bug
• Status: Closed
• Resolution: Fixed
• Affects Version/s: Master
• Fix Version/s: 7.4.3.5 CE GA5, 7.4.13 DXP U1, Master
• Component/s: Objects
• Labels:
  • 7.4-known-issues
  • liferay-ga1-dxp-7413
  • liferay-ga4-ce-743
  • pt-app-security-review
• Fix Priority: 4
• Git Pull Request: https://github.com/liferay-objects/liferay-portal/pull/251

Summary:
Layout builder gets broken when a field from it is deleted

Steps to Reproduce:

1. Go to Objects
2. Create an Object with a field
3. Create a Relationship
4. Go to Layouts
5. Create a Layout with a tab for the field
6. Save it
7. Go to Fields
8. Remove the created field
9. Go to Layouts
10. Click to edit it

Expected Result:
Layout builder is displayed without the field

Actual Result:
Layout builder is broken

Verified on master: a6a81c898f99d7f1055ac099005918bc04eaafb6