From what I read:
There are a number of different moulds for the same basic seeker.
Unfortunately, the exclusive Henkei Skywarp/Thundercracker had those issues The particular mould that those were created from had degradation issues- I think the universe starscream/ or was it acid storm? was from the same and had similar issues also.
As for Gen Thundercracker- he is awesome - nice deco/ affordability/wide availability. I got him misb and he will remain that way. Unfortunately, I only own the Henkei Starscream- so for uniformity - I prefer the Henkei versions for the uniform deco. I bought the KO Henkei ones before this was announced...![]()