Master Detail on Android (Prism) - Accessing Camera via Detail disables Hamburger Menu button

HI,

I have a MasterDetail Page with a button to access the Camera or Gallery on several of the Detail Pages. I'm noticing that upon exiting the Camera/Gallery the Hamburger Menu button is disabled and the only way to access the Menu is by swiping from the left of the screen.

Has anyone come across this behaviour and found a workaround?

Thanks in advance