Annoying Functionality

[otterit]

I posted this before, but I don't think I was clear..

1. Make a phone call
2. Place phone against your ear
3. Talk for a while
4. Pull phone against your ear
5. Attempt to mute the phone
6. Can't mute the phone immediately because I am back at the home screen!!

Is there way to prevent the phone from going back to the home screen? I'd like to have the display remain on the phone screen.

Thanks much!!