Files Stick to Mouse Pointer

27-inch iMac with Retina 5K display,

3.6GHz 8-core 9th-generation Intel Core i9 processor,

64GB 2666MHz DDR4 memory,

1TB SSD storage,

Radeon Pro 580X with 8GB of GDDR5 memory.

macOS Catalina 10.15.3

Since upgrading to Catalina, I have experienced a problem that happens frequently—and has now become exasperating, mainly since it has now carried over into a new iMac—bearly out of the box four days! Firstly, this happens with both the magic mouse and my Wacom pen/tablet (PTH-660 Wacom Intudos Pro Medium 2017).

I use my tablet and pen to control my whole computer workflow—instead of a mouse. Repeatedly (roughly every 5 to 10-minutes), if I'm moving something around the screen, a file, folder, or document, etc., the item sticks to the pen or mouse cursor. I cannot drag and drop. It takes an additional click on the rocker button (right-click), or the mouse to release the document; this is particularly aggravating when working with an extended list of layers in Photoshop, layers won't release when I attempt to drag and drop them in place.

I recently purchased a new 27-inch iMac with Retina 5K display, with the configuration mentioned above. Rather than migrating the system—to save transferring any glitches; I rebuilt the system from scratch! After two days, the problem returned. I initially thought the problem might be a Wacom driver issue, and took the matter to their support section, but couldn't find a problem from their end. The Wacom support technician pointed out that he had seen several complaints from Mac users, dating back to Mountain Lion, that have reported the same issue. I read many of these complaints, and there seems to be no solution. I have uninstalled and removed the Wacom tablet, searched through the main library folder, and user library folder, and removed all the leftover files, plist files ect, and still, it happens with the magic mouse. Is there anyone out there with an answer to this?

I appreciate any help or assistance that you can provide.