diff -up ./src/programs/pkttyagent.c.ori ./src/programs/pkttyagent.c

--- ./src/programs/pkttyagent.c.ori	2019-09-27 14:14:35.096310576 +0200

+++ ./src/programs/pkttyagent.c	2019-09-27 14:14:56.988586737 +0200

@@ -55,7 +55,7 @@ static void tty_handler(int signal)

   if (tty_flags_saved)

   {

-    tcsetattr (fileno (tty), TCSAFLUSH, &ts);

+    tcsetattr (fileno (tty), TCSADRAIN, &ts);

   }

   kill(getpid(), signal);