When using keyboard shortcuts, other tables which have the action are not coming to the front anymore. Why is that?

To protect you from making a decision on the wrong table - while the Ctrl button is pressed, other tables do not jump to the front. For example, if you are about to bet on table 1 with the Ctrl key pressed when table 2 gets the action, table 1 now stays in front to give you the visibility to make a decision.