We have noticed that in some circumstances you can get duplicate devices in Google Assistant, which can cause strange results or errors being reported back by the Assistant.
Some examples.
Turn on the {name} Light => OK turning on two things - when in fact this is a single light.
Turn on the {room name} lights => There was an error communicating with the automation bridge - even though some lights turned on.
Light/Switch still showing up in the Assistant, even thought its disabled in the bridge.
The fix for this, is to unlink the automationbridge from the Google Assistant, and leave it un-linked for at least 2 hours, this appears to reset the list of known devices in your Google Assistant account.