[ubuntu] Glitch on terminal visualization when open in a specific folder

Good morning,
I have Ubuntu 16.04 LTS on a Toshiba Satellite and for a while I have this problem on the terminal. When I am in a specific folder on my computer I have the terminal which show me

myname (green) mypath (blue) $ mystring (white)

The problem is that when I press the up arrow to scroll the previous command, these command are not shown overwritten each one each times I press up arrow, but they are shown one on the left and one on the other side right (as in the figure) and I do not know how to fix this problem.
Some of you have the solution to this problem?

Thanks in advance

Attached Images

• Screenshot from 2016-08-22 11-30-27.png (33.2 KB)