Using the web interface, for some reason you’ve chosen to make microscopic scrollbars in the right and bottom margins.
I detest using the right mouse to drag the canvas mouse-drag-mouse-drag-mouse-drag-mouse-drag-mouse-drag-mouse-drag-mouse-drag-mouse-drag-mouse-drag-mouse-drag-mouse-drag-mouse-drag-mouse-drag-mouse-drag-mouse-drag-mouse-drag-mouse-drag-mouse-drag-mouse-drag-mouse-drag-mouse-drag-mouse-drag-mouse-drag-mouse-drag-mouse-drag-mouse-drag-mouse-drag to get to where you want to go in a frame.
You have scrollbars, but they’re so tiny one either clicks outside the browser window or misses the scroll bar and just clicks on the canvas.
Please make the scroll-bars bigger.