Select all on Link on these products does not work correctly

Checking the Select all checkbox checks all check boxes, but none of the items are added under Selected Products. Checking Select all checkbox and then unchecking the check boxes does add the items to the list of Selected Products. Please fix this. The behavior in the Select Products that you want to link column is correct.

The text “Products selected in right will be linked to each product selected below.” should probably be “Products selected in left will be linked to each product selected below. “