Go figure - I enabled eventStream on the problematic bridges and now I'm not getting any errors. I'll keep it on and observe, but seems to have magically been resolved.
Ok, I'm able to reproduce:
If I use a rule to turn on my Kitchen Group + Kitchen Table Lamp (so one group and one bulb), I get the json error and the kitchen group status doesn't get updated. Here are the logs:
What's even more interesting is that if, in the rule, I first give an On command for the single bulb, then for the group, there's no errors. The error is triggered if the group is turned on before the bulb.
