I had a problem with Firefox yesterday, it sat in my task bar and would only open on the screen when I right clicked and then clicked on maximise, when normally I would have simply left clicked on it in the task bar to bring it back on screen. Now it is on the computer screen full size with the three top bar black and the three buttons in the right showing minimise, restore down and close(-bar, double squares, and red X) where normally I would have minimise, maximise and close( -bar, single square, and red X). I tried uninstalling firefox and then reinstalling but it is the same.
It is a problem for me when I want to have two programs open on the screen at the same time as the firefox now occupies all of the space and I can not reduce its size and move it around by clicking and holding on the top bar.
Any clues as to how to resolve this?