Error with left key in command line

[extremitu]

Accessing through putty with putty-256color in terminal type (and UTF-8 Trasl). I press left or right key in the prompt line. It shows this rectangle [screenshot]. But If I press Ctrl or Shift and Left/Right it moves cursor OK.
When I access through VNC it works fine.
I may be something of putty
Byobu 5.87
tmux 1.9

Any suggestion?
Thanks.

[Dustin Kirkland  (kirkland)]

There are a few hints for putty users in the Byobu manpage.

Either go to http://manpg.es/byobu or 'man byobu'.

Unfortunately, putty is kind of a crummy terminal, so byobu is limited by what putty can and cannot do.

Sorry.

Dustin