I made an account just to respond to this. I was having the same problem and solved it via this thread: ESPHome device does not restart without serial port active (apparently!) - #4 by AussieSusan
My device was either not flashing properly, or power cycling every 10 seconds. Simply removing the logger function completely resolved my issues. Either there is some sort of bug when serial output is not being viewed, or its power hungry, or something, but that is what completely fixed it for me.