Google Chrome selects whole column if I want to select a row

Google Chrome selects whole column if I want to select a row

Whenever I try to select a row, Google Chrome select the entire column. If
I press CTRL+C (CMD+C) and CTRL+V (CMD+V), only the row -just as expected-
is copied/inserted.

It works fine on Firefox, Safari and Opera:
You can view a life-example by visiting Metahill and joining as Guest.