Stress is a funny thing... Those two points are most likely the weakest points and they fail in sequence. Not unexpected I guess, a new chassis is an unknown and you'd never be able to adequately test until it's mass produced and used in several different ways.
If I was a betting man, I'd wager that earlier versions of the body had larger holes and LG reduced their size to lower stress on the areas around them.
So LG well do the 'first we've seen' dance for a bit, and eventually replace affected units... While quietly fixing the design for future runs. Basically what all companies do.
Oh, and the OP is an anti-G3 troll, post is fine though.