Difference for ncurses between interpreted and compiled Haskell?

I have a strange problem with functions timeout and getch from the ncurses library used in Haskell. When I use them from GHCi or runhaskell, they work as expected -- getch waits for the number of miliseconds given to timeout and then returns, even if no input was given. But when I compile the same file using GHC, getch returns immediately.

I tried two ncurses bindings for Haskell; hscurses:

import UI.HSCurses.Curses

main = do
  initCurses
  timeout 1000
  c <- getch
  endWin
  print c

and ncurses:

import UI.NCurses

main = do
  e <- runCurses $ do
    win <- defaultWindow
    getEvent win $ Just 1000
  print e

Both behave the same strange way described before.

I also tried equivalent program in C:

#include <ncurses.h>

int main()
{
  initscr();
  wtimeout(stdscr,1000);
  int c = getch();
  endwin();
  printf("%d\n", c);
  return 0;
}

This one works as expected.

So my question is: what can make the difference when using terminal from interpreted and from compiled Haskell? Do runhaskell and ghci modify some subtle terminal settings? Or does the compiled code load libraries a different way?

ADDED:

I tried to call a the C program from compiled Haskell using FFI and it returned immediately (which is incorrect). I think that means that the problem isn't in the libraries, but somewhere in GHC's runtime.