Since moving the cursor is visible if the cursor is visible, added btui_flush() calls after moving the cursor.

Lua/lbtui.c

@@ -25,6 +25,7 @@ static int Lbtui_enable(lua_State *L)
     if (bt == NULL) luaL_error(L, "Not a BTUI object");
     *bt = btui_enable();
     btui_move_cursor(*bt, 0, 0);
+    btui_flush(*bt);
     return 0;
 }
 
@@ -151,6 +152,7 @@ static int Lbtui_move(lua_State *L)
     int x = (int)luaL_checkinteger(L, 2);
     int y = (int)luaL_checkinteger(L, 3);
     btui_move_cursor(*bt, x, y);
+    btui_flush(*bt);
     return 0;
 }
 
@@ -345,6 +347,7 @@ static int Lbtui_wrap(lua_State *L)
     lua_setmetatable(L, -2);
     *bt = btui_enable();
     btui_move_cursor(*bt, 0, 0);
+    btui_flush(*bt);
     int status = lua_pcall(L, 1, 0, 0);
     btui_disable(*bt);
     if (status != LUA_OK)

Python/btui.py

@@ -178,6 +178,7 @@ class BTUI:
     def move(self, x, y):
         assert self._btui
         libbtui.btui_move_cursor(self._btui, int(x), int(y))
+        libbtui.btui_flush(self._btui)
 
     def hide_cursor(self):
         assert self._btui
@@ -248,6 +249,7 @@ _btui = BTUI()
 @contextmanager
 def open_btui():
     _btui.enable()
+    _btui.move(0, 0)
     try: yield _btui
     finally: _btui.disable()