Front Heat works until rear heat is turned on

[Gene 09/16]

This is on my 2016 Genesis sedan 3.8.
I am having a heating issue! I turn the rear controls to cold and then turn the front heat on and it will heat in the front just fine. When the rear heat is on the drivers side blows cool but the passenger says at their adjusted temp. When the rear blows hot air the drivers side will not??? Is this an actuator or a different issue. I have pulled the fuses and reset the entire system but to no avail.
All help is welcome

 

[dfyffe]

I'm noticing the same same behavior, not sure if this a normal behavior or there is some kind of defect.

 

[harshal_pwr]

Would this be related to fuses?
Just curious

 

[Gene 09/16]

To be honest I have not even checked the fuses. How would a fuse cause this?
I will check the fuses today.

 

[harshal_pwr]

I was incorrect to think of fuses here.
Fuses will trip/blow-off once current limit is crossed.
This would not be related to fuses.