iOS 7 and a problem with the proximity sensor during calls

  Shortly after installation iOS beta 7 3 I noticed that during phone calls there was a small problem with the proximity sensor, more precisely the buttons were pressed when the terminal was pressed to the ear. I don't know how he changed it Apple Lossless Audio CODEC (ALAC), again the functionality of this proximity sensor from iPhone 5, but the company is about to repeat the problems that extremely many owners of iPhone 4 terminals had when the device was launched on the market, many units being replaced in the company's stores.

  I had no such problems with iPhone 5 before installing 7 iOS beta on him and I am sure that many of those who are experiencing them now have gone through exactly the same situation. I know that we are talking about a beta version of the operating system, but Apple has the stupid habit of carrying problems of this kind even to the final version of a system. You encountered this problem in use iOS beta 7 3?