I was recently on a RyanAir flight. As far as I know, they use Boeing 737.
When boarding, I noticed a that one of the panels' edge, roughly where the head / chest part of the logo is, was sticking out maybe 4-5 mm compared to the edges of the neighboring panels.
This wasn't something new because the paint above was in perfect shape.
Is it common for panels on a plane's body to not be perfectly aligned like this? I never noticed this on any other plane I boarded.
The best illustration I could find is a bathroom tile picture:
The skin on the right of the door looked exactly this: one panel had one side not flush with the others and intact paint on top of the whole thing.