Screenshot:
The app opens with the red screen: FragmentA. Each tap toggles between FragmentA and FragmentB (fragment_b.xml). In FragmentA the orange Button is anchored to the white bar at the bottom using a CoordinatorLayout and layout_anchor + layout_anchorGravity. In FragmentB orange button is positioned in the bottom right corner using a FrameLayout and layout_gravity.
Both Fragments are swaped using the orange Button as a shared element with properly setup transitionNames / sharedElement[Enter|Leave]Transition properties.
Everything should work except the animation from FragmentB towards FragmentA happens without animating the orange Button upwards.
