Nope, i’m not using MainUI, i’m sending commands via Habpanel (also tried using REST API directly - got the same results).
I’ve monitored (with browser’s devtools) commands which are POSTed by habpanel to API to make sure they’re correct:
POST http://192.168.0.5:8081/rest/items/LivingRoomBigHeater_TargetT
with correct (NEW) value in POST body.
That was discussed in my previous post on this issue (just omitted those here to preserve focus).