Lightify lamps won't stay at temp selected

I have 3 Lightify lamps that I have in a group and use to all come on together etc. They are how added natively using the ST app in UK.

However when they come on at night when programmed to from motion sensors/doors etc they always come on at warm temp, not the cool temp I’ve selected.

I move the slider to cool temp, and if I turn off/on then stay but after a while they then go to warm again.

How do I get then to stay at temp I want?

No one got any lightify lights to try? I was hoping it would be fixed when u added them natively into ST via the official route.

Before adding I even checked for any firmware updates, via the lightify hub, which there wasn’t.

Bit frustrating when I want a certain colour and they just choose their own.