Color_temp_kelvin not available in matter integration

my config:
Supervisor 2023.07.1
Operating System 10.3
Frontend-versie: 20230705.1 - latest

My zigbee lights and I suppose, other lights have an attribute : Color_temp_kelvin
But, (i only have 1 light connected via Matter) my light, connected via Matter, doesn’t have that attribute?
Why ? Shouldn’t it be available ?

update: more than 1 month later… no solution yet?
September 2023: still no solution