Media volume is changed when on a phone call

I'm using Android Pie on a Samsung Galaxy S9 phone. I noticed if I set the media volume down all the way to mute it that the volume is turned up a bit only while on a call. If anyone is experiencing this issue, it would be appreciated if you can tell me if there are any settings I can access to stop Android from adjusting the media volume while on a call taking it out of mute mode.