This setup seems to have some consistency issues. Sometimes it works as expected. When motion is triggered after the mode has changed or the mode changes while the light is on, the brightness and temperature change. But, many times the brightness will change and the temperature will not, or the opposite, or neither of them change. It's not a problem with the motion detection because the light is always turned on when motion is detected. Any thoughts?
There may be issues with the drivers for your RGBW bulbs. Color temperature in particular for some devices doesn't work well with both temperature and level being changed more or less at the same time, in quick succession. We are aware of this problem, and are working on a fix for it.