It would be more convenient to use the inventory key (or the mod's assigned key) to close the gui instead of having to reach for escape key :)

This feature has been released in the 1.18-3.0.2 version.

I may back port this to 1.17 and 1.16, so I'll keep this open for now.

Back ported. Waiting on Curseforge.

Thanks for the suggestion! This should be easy enough to do. I'll also add the 'n' key (or whatever key is configured to open the gui).

This is a feature I don't usually think about, because I unconsciously use the escape key to close GUIs, since that's how most programs work. I don't find it to be much of a "reach". 😜