With 19.10 and Firefox, I have trouble dragging the address from Firefox to the dock.
On a laptop (HP Probook G6) I cannot drag it directly to the Dock. I have to drag it to the desktop first. Then drag it to the Dock. However the original on the Desktop stays, and if I remove that one, the shortcut on the dock stops working.
On a computer, I can drag it directly to the Dock, strangely. Both laptop and PC are running 19.10.
Both on the desktop and on the dock the icon is an ugly generic white icon showing “< / >”.