The direct selection tool doesn't work in photoshop.

When I choose the direct selection tool (A) and choose the WHITE one, I should be able to click + drag select some anchor points in a shape and move them independently from the other non-selected anchor points. This doesn't work independently, all anchor points move together, as such I can't expand the side of a shape by dragging a point.

The way to get out of this glitch, is if I select ONE anchor point, move that single point, then I can move the points I want independently.

This isn't the easiest thing to describe.