I am trying to use the arrow keys to navigate in the grid. After a click in one cell, the arrow keys are inactive, I cannot use them to navigate(focus is in input?).
I have to make a click outside the columns (in grid also, but where there are no cols) and, after that, the arow keys are functional.
When a vertical scrollbar exists, clicking Ctrl+Home or Ctrl+End blocks also the arrow keys, until a click is made outside the columns.
These problems occur only in Mozilla, in IE is ok.