Group switch not working anymore

[cyb7 (Peter)]

I found a different Thread. It seems to be a known problem since 2.5.0:

Group switch not updating

I just updated to 2.5.0.RC1 and in habpanel now if I click a group switch item it no longer updates the state unless I reload the page. It will however update the state of the group if I turn on an individual light in the group. Looking at the log I believe this might be related to not seeing a GroupItemStateChangedEvent when sending the group a command directly. But I do see a GroupItemStateChangedEvent when I interact with a switch directly. Results from smarthome:send KTN_LightBulb_01_Swit…

An issue was already opened on Github
https://github.com/openhab/openhab-core/issues/1330