Changing temperature via Web BasicUI after restart fails unless done in App

[chris922]

I migrated my whole setup to openHAB 3 and noticed a strange issue:

When I am using the Web BasicUI and try to change a Setpoint that is linked to a Number:Temperature Item it doesn't work.
But when I change this item via openHAB Android App then I am afterwards able to change it via Web BasicUI as well.

I checked the network logs from my browser and found out, that the first requests after a restart of OH via Web BasicUI fails with a status 400.
The request payload is: 20.5 %unit%
After changing the value via Android App and then changing via Web BasicUI the request payload changed and is now: 21 °C
So first change failed while using %unit%, afterwards it works when °C is used.
When I restart openHAB the issue is back again.

As mentioned I am using openHAB 3.0 via openHABian on a RPi4.

Item:

Number:Temperature EG_Bad_Heizung_Temperatur_Soll     "Komfort Soll-Temperatur [%.1f °C]"  <heating_temp> (agEG_Bad_Heizung_Thermostat) { channel="zwave:device:controller:node43:thermostat_setpoint_heating", alexa="ThermostatController.targetSetpoint" }

Sitemap:

Setpoint item=EG_Bad_Heizung_Temperatur_Soll     minValue=16 maxValue=25 step=0.5

[chris922]

Seems to be the same issue as already reported here: openhab/openhab-webui#765

I will close this one

[chris922]

I will reopen this issue, because as mentioned in openhab/openhab-webui#765 it looks like the root cause of the issue is in the core.ui lib. You can also find a PR for this: #2165