My PC is not a phone - how do I remove the swipey pre-log in screen from Gnome 3?
As a workaround, you can press esc instead of dragging with the cursor.
The mouse wheel might also work.
And another extension that should do a similar thing.
Just start typing your password and the screen will just go away. No need to press/swipe/whatever anything at all.
I found this in an Arch Linux forum and it appears to work to remove the swipe screen (screen shield)
gsettings set org.gnome.desktop.session idle-delay 0
Found here: https://bbs.archlinux.org/viewtopic.php?pid=1351594#p1351594