Restrict drag and drop for multiple images in blogs

Issue

• Why is there no error or warning while selecting multiple images to upload via drag-and-drop functionality?
• If it is not uploading multiple images, then it should not select multiple images in the first place, like what we have with the Select field in blogs.
• Steps to reproduce:
  1) Start the DXP server 
  2) Navigate to DXP site> Content and Data> Blog> Add entry
  3) Use drag and drop to select multiple images and try to upload
  4) All the files are uploaded and one of them is shown

Environment

• Liferay DXP [all versions]

Resolution

• The observed behvaior is expected behavior with drag-and-drop as the Item selector does not support multiple drag-and-drops.  
  • Also, this has more to do with the system, as this selection is made in the local OS file system.
• However, Liferay has classified this as a usability bug, which is being investigated at LPS-194264. This LPS is currently under review at the time of publication.

Additional Information

• Please submit a support ticket with the patch details attached if you require a hotfix or more information on this.