I'm not sure how valuable that list will be. I have a customer with a mixed multi-room system Comcast-SONY-SAMSUNG-SONOS There is an HDMI splitter for the Blu-ray player. After months of stable operation, the SAMSUNG IR TV commands started turning ON the SONY TV in another room. Eventually, I worked through the issue with CEC defeaters. I'm only saying "worked through" because I have low confidence about claiming "fixed".

I'm most suspicious about the SONY TV. Initially the system was fine, then we had intermittent audio issues between the SONY TV and a SONOS BEAM. I switched from HDMI to optical. Things were fine for a few months., then there were more audio issues. I found some SONY options that I didn't recall from prior. Then it didn't seem to matter between HDMI and optical, so I went back to HDMI. This is a proudly anti-tech customer. I can't rule out the customer pressing something.