favorite apps edge panel has gone blank topic

the favorite app edge panel has gone blank. I tried adding my apps to the panel but it doesn't show up on the edge. I did a factory reset and the panel came back and I was able to edit it the way that I wanted to but after a week the panel went blank again. I go into manage panels , I select the favorite app panel , i try to drag my apps to it including the original apps.... phone, contacts email, internet, camera.. select done close the application check my edge and the panel is blank go back into the application and the edge panel is blank again... this is the only panel that does this...I have Factory reset the phone 3 times and have monitored the apps that i have installed ..everything works fine but after a week my favorite app panel goes blank..guess its time to call tmobile for a new phone.