I can't resize a window because when I select "restore" button it disappears as if minimized. I can only maximize but then can't get the scaling handles. Does anyone know how to fix this problem?
Do you see a blue bar with page title when minimized at the bottom of the page? You probably do, if so you can resize by left clicking the corner of the blue bar and resize to the size you require. If you cannot see a blue bar with page title, close any other open pages to clear the screen.
It sounds like it has been moved off the screen. Restore the window, then right click the icon in the task bar, and choose 'move', then use your arrow keys on the keyboard to move it around. Steve