Oddly enough, this still works on Safari.

And it worked with Google at the early beginning when the computer was freshly installed (System, Google and Dropzone). When I finished installing my computer, it stopped working.

And if I drag the file / link first to the desktop and then drag it to a folder in Dropzone, then it works too.

Strange.

Of course it is. Please see the attached video.
This is a fresh installed system.

https://www.dropbox.com/t/U3zcptqYYWnObgMW

Another thing. Yesterday I signed up for your forum. And only I signed up yesterday. Since then, I've been getting tons of spam messages. Has anyone else observed that?

Is there a solution? Because the same here with Google Chrome and Firefox. Safari is working well with dragging to Dropzone