It could be a recently replaced panel, assuming the photo was taken before aafter they started replacement but before they got to replace the next panel.
It could be that the panel had been replaced for whatever reason this year was just newer and less fragile than panels that have been there for many years, growing more brittle day by day. The fresh panels would naturally be more resistant to damage than old ones.
If you go about 18 rows up from the bottom one in the picture in reply #33, there’s like a half of a row of panels that came through unscathed.