Blocks in object layout cannot be deleted by the user

Issue

• The user cannot delete a block in the object layout
  Steps to Reproduce:
  1) Navigate to Menu > Control Panel > Objects
  2) Create a new object (with fields)
  3) Define the layout of the object
  4) Add a tab and a block
  5) Add a field to a block and save
  6) Navigate to Layout
  7) Navigate to tab Layout
  8) Now, delete a block and Save 
  Expected Behavior: The block will be deleted, and the following success message should be displayed: "The object layout was updated successfully".
  Observed Behavior: The error has been observed with the following message "Please add at least one field is displayed".

Environment

• Liferay DXP 7.4

Resolution

• The observed behavior is a known Liferay DXP bug which will be addressed by LPS-156233
• If the hotfix is required for this issue, please create a support ticket requesting the hotfix by attaching the patch details.
• Installing Fix Packs and Hotfixes on Liferay DXP will guide to installation of the hotfix in the respective environment.