Cannot switch from color to white with echo

I know there is a FW Update for this problem. Can you please release it for German Servers?
I can switch from color to white on my bedside lamp and also on my yeelight bulb. But the lightstrips are unable to. Always getting the response from Echo: “This only works if your light is set to a shade of white”. -> roughly translated from german, but hope you understand.

Weird thing my google home can switch color without a problem.

FW Version of the Light Strips: 1.4.2_0049