User Agent: Mozilla/5.0 (Windows NT 5.1; rv:36.0) Gecko/20100101 Firefox/36.0 Build ID: 20150305021524 Steps to reproduce: doing ordinary surfing some times the parts of the background and parts of open programs will show through Firefox and when switching tabs parts of the websites of the tab i had left still shows when switching to a new tab Actual results: has a transparency problem surfing the internet and switching tabs attaching an image to what the problem looks like Expected results: surf the internet without this problem