Emacs TTY super+number inserts IO characters!

Hi there,

I want to try emacs in my terminal-based workflow. I use tiling window manager (i3 - qtile) in ubuntu

so super+number changes the workspace. When starting an emacs with -nw, changing workspaces

super+[1, 2, 3, etc] inserts "IOIOIO" characters in my buffer.

Any ideas?