When I press Esc, sublime 3 close auto-complete window, but it’s still in insert mode.
When I press Ctrl+c (same as Esc in vim) sublime 3 exit the insert mode, but I still see auto-complete window.

In both cases it should close auto-complete window and exit insert mode.

Thanks

Vintageous already does some of that, and if you open an issue in the repo, the rest will follow at some point.

github.com/guillermooo/Vintageous

(Vintageous is a rewrite of Vintage, the default Vim emu package for S3.)

it has other problems