I'm very new to Nuke, and I'm following a few video tutorials. And when I try to select and move for instance the "Tracker" node, I can't seem to be able to select it. I can press CTRL+A and see my "Tracker" node being highlighted in the Viewer, and I can now move it with the NUMPAD, but I can't scale it.
EDIT: I can't seem to be able to select/move anything in the Viewer. For example if I add a Transform node, I can see the Transformation Overlay, but I can't select it or move it with the mouse.