HA, Cloud, Alexa and Thermostat

I have in my HA config some climate device like

climate.bathroom_heating_heating_1

They work and I can control my Heating. But when expose this climate Device to Alexa over Cloud I can see the device showing up as thermostat but it can not get any info from HA or set the temp. Do I need to do some special config? Or is that a bug?