[Music] - App no stereo after call

Good afternoon,

On my Samsung Note 3 I have been using / and / and I have encountered the following problem with Music App

I am listening to music and I receive an call I am with phones the call is made only 1 column and when I finish the call back to the music app but only in a column I have to restart the system and reopen to open the application because it does not give stereo

Thank you

Carlos Correia