Steps to reproduce:
1. Open Firefox and navigate to any website
2. Drag the URL from the URL bar to the desktop
Plasma creates a .desktop file launcher for the URL instantly
Plasma shows the standard menu offering "Move here", "Copy here", and "Link here". But "Move here" and "Copy here" don't make sense when the source is a URL from a web browser. It should just automatically choose "Link here" and not bother to show the menu.
I often drag images from the browser to copy them, so I don't see how we can implement this without sacrificing others. "Move here" doesn't make sense but Copy certainly does.
Can we introspect the MIME type, maybe? Then only links would always get "Link here".
Currently, on neon unstable is created a Stick Note when I drag a URL from Firefox and drop it on desktop.
At least on Wayland.
LOL can reproduce. That seems like it's a Plasma issue. Can you file a bug on Plasma for that?
Currently I can only reproduce comment 3 with chromium-based browsers running natively on Wayland.
Reported as bug 449645.