detach_tab can't find my OS windows

[ste-goldstein]

I've got the following mapping map ctrl+shift+d>a detach_tab ask
The below screenshot shows another 4 OS windows, but kitty only asks me if I want to create a new OS window.
Running Sway on Arch Linux

[kovidgoyal]

You are probably creating OS Windows in different kitty instances. Run kitty with --single-instance.

[ste-goldstein]

That solved it, thanks!