It appears cortile only works on my secondary monitor when I enable it. I can drag windows to the primary monitor but when I drop the window it gets sent back to the secondary one.

The monitors are of the same type and have the same name, on MacOS this can cause confusion with Hammerspoon, perhaps something similar is happening here, if cortile has multi-monitor support?

I'm running cortile on elementary OS 7 (Based on Ubuntu 22.04 in case you're not familiar), let me know if anyone needs more information.