That makes me feel better. Yours actually has the same kinda "white" spots mine has. They're not exactly white, but it's spots that were painted way lighter than the rest of it and kinda stick out. Yours doesn't have the clusters I have or the amount, but they're there. It's not only on the tentacles too, there was a spot on the exposed flesh part of his shoulder too. D ick Po's had it in the photos as well.
As for the arm, it sucks. I guess they all don't have strong support. Like it's fine to move without it holding anything but it moves too freely for my liking. At least the elbows are strong.
The fact that the shoulder is frozen and there's clearly a swivel joint in there. Does yours feel like a rubber band is in there? When I extend the right arm upward to a certain height, I hear it flick like it's rubber. And when you pull the arms out from the sockets that pull back like it's rubber too.
Is yours the same? Kinda weird they didn't just give us ball joints. I kept trying to force the right shoulder to move outward but got scared I was going to break it. The left one moves out fine and is a strong joint.
Sorry to ramble
I'm just glad I can bounce all my concerns off someone else that got it.