Drag&Drop with multi selection is not working

[alexfournie]

Environment :

• Windows
• Firefox
• Chrome
• Latest

Steps to reproduce:

• Select several objects on a diagram (via area or individual selection)
• Drag&drop the selection into another compartment or object which accept this action

Expected behavior:

• All selected objects are moved to the dropped area

Actual behavior:

• Only 1 object is moved to the dropped area
• The others remain in original object
• The dropped object is not always the same even if we do the same action

SysON_multiselect.d.d.issue.mp4