Okay, I started having this issue about two days ago. I woke up Tuesday morning and my PS5 was on and in rest mode, at first, I thought maybe I left it on by mistake and it just went into rest mode, no biggie. Well again I woke up during the middle of the night last night and it was on, I turned it off and went back to sleep. So it happened for a third time I was actually up to witness it. I heard the beep it makes when it turns on and I saw the lights flash before they turned blue. I had checked the internet and I found that it's a common bug that has not been addressed yet, I read an article saying to combat this issue until a fix is made is to turn off something with the HDMI, so I did but it turned on again as I stated before while I was awake. Want to know if anyone else is having this issue and have found a temporary solution for it until Sony addresses this issue. My solution as of right now is when I'm not using my PS5 or tv or I cut power to the extension it's plugged into until unless I'm using my TV then I just unplug the PS5 itself.