1. First display of pubsub dialog will render in the wrong location - normally much wider than the browser window size with the top left corner of the dialog at the centre of the screen. Touching the browser horizontal scrollbar will cure this as will closing and reopening the dialog.
2. The dialog is modal - this makes it pretty useless to see what is happening in real-time - please make the dialog modeless. Suggest docked to the bottom of the screen like the Chrome inspector etc. See AKU-486 for this feature request