First: is this a bug report? A suggestion? Or asking for help?

Problem description

If possible code, or pseudo-code to reproduce the problem / present an idea.

Environment

Operating system: linux distribution, windows, macOS, ...
Backend used: ncurses (the default one), pancurses, termion, ...
- If using ncurses on linux, ncurses version? (run grep "define NCURSES_VERSION " /usr/include/curses.h)
Current locale (run locale in a terminal).
Cursive version (from crates.io, from git, ...)