Ctrl-Left and Ctrl-Down send strange key combinations

[koterpillar]

For Ctrl-Left and Ctrl-Down, Kitty sends key combinations that are out of alignment with the rest of the keys.

Here's the output from pressing Ctrl-Up, Ctrl-Down, Ctrl-Left and Ctrl-Right.

Kitty:

$ sed -n l
^[[1;5A
\033[1;5A$
^J
^J$
^H
^H$
^[[1;5C
\033[1;5C$ 

XTerm, Gnome Terminal and Termite:

$ sed -n l
^[[1;5A
\033[1;5A$
^[[1;5B
\033[1;5B$
^[[1;5D
\033[1;5D$
^[[1;5C
\033[1;5C$

This is Linux, X11, running under XMonad.