An Idea Workspace has a Top left button beside Fit at the bottom right of the canvas. It keeps the zoom as it is and moves the view so the items start at the top left of the window. Items that have drifted off the left or top edge come back into view, and items that have drifted to the right move over. Fit still zooms to show every item. The Home key does the same as Top left.
Move an Idea Workspace's items back to the top left without zooming
Top left, beside Fit, keeps the zoom and moves the items to the top left of the window.