2.3.9.150 is too new to be the issue for me at least. This has really been an on going issue for a couple months. I can't pinpoint exactly when it first started because I don't use HomeKit that often.
If we had access to the application logs it sure would help on narrowing down that time frame and maybe pinpoint the issue. I'm hoping maybe that show a time pattern?
@thebearmay suggested that it is a 1% issue, and I like finally being in the 1%, but not in this case. If it is something common for just a few of us then we need to figure that out. I don't want to hack it by adding functions to turn off and on virtual switches. That isn't a fix in my eyes.
Here is my list of things that could be common with other people having this issue:
- Multiple Apple hubs ( 3 Apple TVs)
 - Two of those hubs are on Wifi, one wired
 - All devices on the same VLAN
 - Unifi Network for AP and switches
 - Static IPs for all devices involved
 - All Apple, Hubitat, and Unifi devices are on the latest firmware
 - Restarting the Homekit application does not solve the issue when it happens
 - Restarting all Apple devices does not solve the issue when it happens
 - Restarting the Hubitat hub solves the issue when it happens