GNU screen 4.9.0 passing terminal title escape sequences to display area
This is a regression noticed when updating from Alpine 3.14 to 3.16.0 with screen-4.9.0-r0
When updating the terminal title, a copy of the text is also sent to the regular display area, overlaying text there, and corrupting on-screen refresh too.
Ensuring no local configuration is in play, and then updating the title via escape sequence:
mv .screenrc .screenrc--
screen
#...
printf >/dev/tty '\033]2;%s\033\\' fred
Expected: terminal title is updated, nothing shown in the display area.
Reality: with Alpine Linux 3.16.0 and 4.9.0-r0, a copy of the title text is also shown in the display area.