In Windows 8.1, if I have bridge open for a long period of time sorting through photos (usually takes a couple of hours for this to happen), eventually the right click on my mouse, along with the ability to click on the drop down menus so they actually drop down, stops working. I will be unable to access any drop down menus on my computer or right click on anything, including the task bar. If bridge is force closed, I immediately am able to use my mouse again. I have now experienced this on four separate occasions. What could have caused this problem?