Strange behavior when getting a shell

[offlinemark]

Hi, I've noticed something weird when I pop a shell using peda.

Starting program: /home/me/class/stack/ip "$(./newexp.py)"
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process 25780 is executing new program: /bin/dash
$ ls
[New process 25788]
process 25788 is executing new program: /bin/ls
Makefile    ip    myexp.py   payload.asm  peda-session-cat.txt  peda-session-ls.txt
exploit.py  ip.c  newexp.py  payload.bin  peda-session-ip.txt   peda-session-whoami.txt
[Inferior 2 (process 25788) exited normally]
$ Warning: not running or target is remote

[1]+  Stopped                 ~/gdb-7.7/gdb/gdb -data-directory ~/gdb-7.7/gdb/data-directory ip
me@server:~$

The shell is launched and when I execute command from it, after the command finishes, peda itself gets stopped. Regular gdb doesn't behave this way, it gives me a functional shell. Can I get some help with this? How can I make my shell functional (aside from porting my exploit to non peda env)?