FYI. Ticket #286581 opened for me. I’ve have 11 zigbee devices drop since the firmware update where I needed to manually reset, including a couple Keen vents that I needed to visit twice. All have been GE bulbs, Iris motion sensors, Iris open/close sensors, and Keen vents.
What use to be a very stable zigbee mesh for me has been turned upside down. This is very concerning. Hub version 16.9