Bookmark Drag & drop issue in Acrobat DC 64 bit

Hello,

          We are the developer of  thrid party Plug-in applications, and that plug-ns we installed in 64 bit Adobe Acrobat DC 22.003.20310.   After installing this tool,  I am not able to drag-drop bookmarks in PDF.   

Under Preference->Secuirty Enhacned, I uncheck the "Enable protected Mode at startup", also Uncheck "Enable enhanced Security" opitons.

and there is no security related items selected in Acrobat and no security in PDF(password or other).  but only because of this third party plug-in, I am not able to drag and drop bookmarks,

P.S.  The same plug-in(32 bit version)applications, when installed in 32 bit Acrobat, I can do drag-and drop of bookmarks.

What is the issue, which causing the failure of drag-drop of bookmarks in 64-bit Acrobat.  Please let me know.

OS:                       Windows 10(64 bit)

Acrobat verion:    Acrobat DC 22.003.20310