P: LrD 10.0: Local: Drag and drop Inconsistent drag-and-drop behaviour with local files on macOS

Inconsistent drag-and-drop behaviour with local files on macOS.

• In the Browse tab, dragging and dropping files from a CFexpress Type A card to a folder on my local hard drive causes Lightroom to COPY the files. The original files remain on the card. 
• In the Favorites tab, performing the same action causes Lightroom to MOVE the files. The original files are removed from the card.

In the previous versions, Lightroom always copied the files, regardless of whether the folders and files were viewed in the Favorites tab or the Browse tab. This is the preferred method.

Holding down Option, Command, or Control while dragging and dropping the files does not change this behaviour. Unfortunately, only using the Browse tab is not a long-term option.

This behavior is really confusing and frustrating because it messes up my files on the card / camera. 

Thanks in advance for any help or suggestions how to solve the issue.