Assistance Needed with Multi-Item Drag and Drop Function

I hope this message finds you well.

I am writing to report a difficulty I am encountering with the “Multi-Item Drag and Drop Function” in Anthologize.

Issue Description:

While I am able to left mouse click on “Posts” and drag multiple posts simultaneously, When attempting to do so, either only one item gets dropped in the “Part” I have selected.

I can see the multiple posts appear for about 1 second or so over the “Part” section, only to have them disappear.

What am I doing wrong? Could you please provide guidance on how to resolve this issue?

Thanks in advance for your help and have a great day!