NTSB confirms door plug moved on prior flights
I dont think I've seen this mentioned yet... (sorry that I can't link since I'm new, but this was on CNBC.com and a couple other news sites)
"Homendy also confirmed that the Max 9 door plug had moved during prior flights, citing markings on the door. There were 154 prior flights by the Alaska Airlines Boeing 737 Max 9 before the Jan. 5 flight. “There were very small movements until it eventually came out,” Homendy said, adding that testing showed “you could see a bit of a gap towards the end” but that it was not clear how noticeable it was."