HomePod (2nd generation) keeps turning on loud music after iOS 18.5 update

At the first time, I think I am not alone, I think many of us experience homepod play music automatically against your wish at loudest level after iOS 18 update. I have already disconnect the touch panel cable and stablely used for a long time. However after 18.5 update, it happens again. Anyone got any ideas? Apple seems still do not admit thats a hardware problem.

[Re-Titled by Moderator]

Original Title: Homepod2 sucks after ios 18.5update