buttons during call do not show up

I just upgraded to .450 and I have a problem with the 4 buttons present during a call (activate speaker, mute, hold and add participant buttons). I have wiped my device cleans with BBSAK and re-installed the software but the bug is still there. This only happens if i receive a call. If I make the call, the buttons will appear. Also, even though the buttons do not appear, clicking on the box itself will perform the task. So if I click on the top left box, the speaker phone will be activated. The problem is that the boxes are blank, it does not show the specific task it is supposed to perform. I have not read about any other people having an issue with this so I hope someone can give input. And yes I have done battery pulls. Thanks everyone!