Macbook Pro OS X Yosemite 10.10.01 Log In Screen Issue

After my computer falls asleep and I touch the mouse pad to wake it, the password entry log in box is shifted to the left about 1/2 an inch. To fix this, I have to enter my password and wait for the computer to reload the log in screen, at which point the password entry log in box is back in the correct position and I am able to enter my password and successfully log on to my user. This does not happen every time the computer goes to sleep. I have not attempted any troubleshooting with the exception of restarting the computer. Any thoughts would be appreciated.