Brian, I don’t want to spoil your enthusiasm, and I hope that I am the only one who experienced this level of unreliability. But the resolution provided by support for my various issues with failed zigbee devices was to disable my local processing, as documented in this thread
I have too been watching this forum closely, to understand why some people report less problems than others. My conclusion is that there is no single explanation.
One hypothesis is that people who have great experience, don’t use most noticable triggers like lights on sensors. Another is that some people don’t use certain features with stock apps like setting lights levels. Others are not tinkering if something doesn’t work as it supposed to.
The bottom line though, is that ST is trying hard to correct problems on the fly, and while they fix one thing they break another. All of these bugs will end at one point, but until then, is not much we can do. Either sit back and do nothing or chase ghosts and drive yourself crazy.
Some precautionary measures I took, as I am one of the latter category, was to stick with only official apps and devices while ST engineers fix what they need to fix.