Emulated Hue - Error handling UTF Characters

I just setup the emulated hue component. Basically it works, however I use “expose_by_default: false” and provide a list of devices to expose:

entities:
    light.kueche_gruppe:
      name: "Küche"
      hidden: false
    light.schreibstube_2:
      name: "Büro"
      hidden: false

so far so good.
When I now add the devices to Alexa, all entities with “ü” in the name appear twice. This seems to have somethingh to do with the handling of UTF-16 characters
In the JSON retuned by “http://hassio/api/pi/lights”. I get this:
{“manufacturername”: “Home Assistant”, “modelid”: “HASS123”, “name”: “B\u00fcro”,
“state”: {“bri”: 254, “mode”: “homeautomation”, “on”: true, “reachable”: true},

In the Alexa App on my Phone I see the light twice: “Büro” (Correct) and as “Büro”

Is there any way to correct this?

Best regards
Yonz

Same problem here.

Any solution ?