Linked Items not the same

I have a command which sends the “OFF” to my boiler control. It does, but it doesnt actually turn the boiler off. if I look in HABadmin then I can see the BoilerMain has recieved the Off, but it hasnt actually turned the linked channel Off, that stays on. What am I missing, I thought they should change together?

If however, I click the “refresh items” button underneath, it instantly turns off as expected…

What happens if you use a “normal” GUI, e.g. Basic or Classic UI?

I don’t have them both listed in GUI, only the BoilerSwitch which is the one that does change

Then I suggest to put them on there and see what happens.