I don’t see any way this is anything but a filament issue, it’s not like your print head could print a layer after the layer on top of it…

fwiw, I’ve had similar issues with some multicolor filaments, I think sometimes they just aren’t made quite right but still pass QA.

They also have one of the best reward programs for designers, and creating an account isn’t difficult; I really don’t see how this is an issue where links should be banned.

Plus this post isn’t even a makerworld link, it’s a hackaday link, so a URL filter wouldn’t have done anything in this case anyways.