I'm using Linux Mint LMDE 4 with Cinnamon.

1. Download PDF's from (in that order):

• https://openstax.org/details/books/f%C3%ADsica-universitaria-volumen-1
• https://openstax.org/details/books/f%C3%ADsica-universitaria-volumen-2
• https://openstax.org/details/books/f%C3%ADsica-universitaria-volumen-3

2. Open Google Drive and drag-and-drop each file into the GDrive web interface.

Results:
I got 3 copies of the last file.
After that I opened my OS file explorer and did the same, with similar results. Maybe the first file was copied right, but when I dragged the second file it copied the third, and dragging the third file would prompt me a message adking if I'd like to overwrite it.

Expected results:
The selected file should be the one being copied.
Here's a video of what happens: https://drive.google.com/file/d/1Blqv6ZO4TOfgBRHqkvaZzSMrU02f2PEO/view?usp=sharing