Hi Raghull,
Thank you for your patience.
In Blazor SFListBox there no support for dragging an item outside of SfListBox. so, we are not able to achieve drag and drop functionality over the document editor in blazor platform.
so, please share the details of which component are you using for dragging an item. which will be helpful for us to investigate further and provide you the solution at the earliest.
Regards,
Kurthis Banu A.