Scene with Hue after update

It looks like after updating to version 0.66 that my scenes are not working correctly anymore with Philips Hue.
Some how there is something wrong with the XY_Color what is not corresponding as programmed in my scenes.

Before the update the following code was working, any thoughts?

- name: Woonkamer_Normaal
  entities:
       light.erker_links:
            state: on
            transition: 5
            brightness_pct: 50
            xy_color: [ 0.378,0.559 ]
       light.erker_rechts:
            state: on
            transition: 5
            brightness_pct: 50
            xy_color: [ 0.378,0.559 ]
       light.iris_schouw:
            state: on
            transition: 5
            brightness_pct: 60
            xy_color: [ 0.6, 0.37 ]
       light.iris_tv_meubel:
            state: on
            transition: 5
            brightness_pct: 60
            xy_color: [ 0.6, 0.37 ]  
       light.staande_lamp_hektar:
            state: on
            transition: 5
            brightness_pct: 50
            xy_color: [ 0.378,0.559 ]