Line Chart Interaction: Selection modifier buttons become disabled when selection is on
This issue was created automatically from an original Mantis Issue. Further discussion may take place here.
On top of the line chart view are buttons to start a rectangle or polygon selection and add, subtract, and toggle selection modifier buttons. A very strange behavior of these buttons is that as soon as you start a selection (by, say, clicking rectangle selection) all the modifier buttons become disabled. That means you can't use the modifiers on the selection you are doing. You have to cancel the selection, hit the modifier, and then start the selection again.
This behavior hits the trifecta of being weird, confusing, and annoying all at once.