iOS 15 Homekit broken

Apple Support and I have found a solution. It is still a bug, but this helps restoring the functionality:

instead of selecting the home device value to be checked within the if > then clause use this route in your shortcut:

• search for „Home“ when adding a new action
• tap on Home (above)
• then select „check status“ instead of „control home“ (sorry i try to translate from german - see screenshots)
• select your sensor and the value to fetch afterwards
• create your if > then statement
• as condition source select „magical variable“ and then the variable from the „check status“ above
• to again on the condition and make sure to select as variable type „number“ not „measurement“
• finish your if > then statement
• save

enjoy your automations to work again as expected! Finally!

i think i found the issue, but have no way of solving it myself.

almost all of my automations revolve around asking homekit to retrieve „special“ values like wattage or lux for later use in an if then statement.

these seem to work just fine when testing on the device i am creating the automation on but as soon as the homekit central should handle it these queries break down.

Here is how i found out:

• i created a simple automation checking for light on/off then do stuff. Result worked on phone and central
• then i added another check for brightness value with a hue sensor e.g if lux < 10 then. Worked on phone but not with the central
• then i checked with an eve outlet and wattage e.g if wattage < 180 then. Worked on phone but not with the central

this means: the central has a problem understanding and or comparing the value when on its own.

Here is what i have been able to find out. Home app crashes when checking status for „light xy is off“ (btw the light is a philipps hue color spot)

and of course checking for brightness reveals the last known value and not 0 even though the light is off, which could have been an alternative route for the if then statement.

also this forum dies not seem to be up to date. I received email on a reply but it does not show here.

Thanks for your reply. The same can be said bout about Homepod Mini and iPad.

my strongest guess is that while manually testing the statements (test automation) on device works but when it should be handled in the background either the values are missing or labelling is wrong.

I do assume wrong labelling (abd not properly transfered to the device functioning as the central) since the way automations with Lux-values have the label set to Lux prior to iOS14 and before me having to choose the correct value type.