Some videos that I've watched of the pilot app, I can see a yellow line connected from the drone icon to the home position in the map view. I don't see this on my map while flying.
Is there a way to turn this on?

Mine did it automatically so I'm not sure that its an option, nor have i seen it in any of the options within the app. Only thing i could suggest is deleting the app and reinstalling it.

If the next update doesn't solve it then I'll try reinstalling. I just thought there must be a way to turn it on and off since i don't see it on my map.  

The flight route? There is a show flight route option in app, you can enable it.

Thank You, I'll check it out

The "Show Flight Route" shows where you have flown. My map shows this.

I'm talking about the straight yellow line that shows you the path to home from where you are.

I have on there now. I'm not sure why it wasn't there before.