Bug report

import cursesdef bug(scr):    scr.addstr("first line\n")    scr.addstr("second line")    scr.refresh()    scr.getch()    scr.insstr(0, 5, "X\nXX")    scr.refresh()    scr.getch()curses.wrapper(bug)

Using Python 3.11.3 and 3.11.4 on Apple M2 Mac (Mac OS Ventura 13.4, iTerm and Terminal.app), Python 3.10.6 on Intel Mac (Mac OS Monterey 12.6, iTerm) produce:

Python 3.11.2 on Intel Ubuntu 22.04 (in GNOME terminal) produces correct behavior. An equivalent C program using ncurses directly on the above Macs (in the same terminal) also produces correct behavior.