Also worth noting that devices which are referenced or changed in a manual routine (aka scene) don’t show in the routines tab on the device card for a given device.
Similarly if an automatic routine with a trigger executes a manual routine that changes state of device x I don’t think that automatic routine features in the routines tab for device x either.
Also check if the device is part of a lighting group.
And finally go the AWA → devices → your device and scroll down to look at in use by to see if that helps.
OK, and Menu > History in the ST app doesn’t show any activity when the light turns on other than the light being turned on?
If you have Google linked to SmartThings do any household members have any routines set up? You would have to check everyone. I’d actually go all in and temporarily remove the the link to make sure, especially because of the historical (?) issue with bridged homes.
In Use By are just the three device groups and one scene I have programmed. Below that, under Events, it only shows the last 100 entries, which are all used up by my morning 60min dim up and color temp change. Is there a way to get log info from before that?