Group switch not working anymore

Setup, Configuration and Use Items & Sitemaps
1

I am running OpenHab 2.5.1-2 on a Raspberry Pi 3 Model B with OpenHABianPi. I have a configured a small group with two members to control two Hue lights:

Group:Switch:OR(ON, OFF) g_hue_flfr_toggle
Switch  hue_fl_toggle       (g_hue_flfr_toggle)	{ channel="hue:0210:000:FL:color" }
Switch  hue_fr_toggle       (g_hue_flfr_toggle)	{ channel="hue:0210:000:FR:color" }

In the past the group switch worked fine: When I switch it from OFF to ON, both members and the switch itself became ON. This has changed. When I switch it from OFF to ON, both members become ON, but the group switch stays OFF. When I just switch on a member of the group, the state of the group changes.

When switching the group on, the following is logged:

2020-01-18 10:58:55.057 [ome.event.ItemCommandEvent] - Item 'g_hue_flfr_toggle' received command ON
2020-01-18 10:58:55.067 [ome.event.ItemCommandEvent] - Item 'hue_fl_toggle' received command ON
2020-01-18 10:58:55.100 [ome.event.ItemCommandEvent] - Item 'hue_fr_toggle' received command ON
2020-01-18 10:58:55.131 [nt.ItemStatePredictedEvent] - hue_fl_toggle predicted to become ON
2020-01-18 10:58:55.145 [nt.ItemStatePredictedEvent] - hue_fr_toggle predicted to become ON
2020-01-18 10:58:55.156 [vent.ItemStateChangedEvent] - hue_fl_toggle changed from OFF to ON
2020-01-18 10:58:55.158 [vent.ItemStateChangedEvent] - hue_fr_toggle changed from OFF to ON

Does anybody know why the group switch is not changing its state to ON anymore?

Best regards,
cyb

3

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

An issue was already opened on Github

4

That’s all about viewing updates in HABpanel.

It makes no difference to Group events at the OH end, e.g. as viewed in events.log