Issue with animal slot pixels in snow

[fubarbarian]

Looks like a couple pure white (#FFFFFF) animal slot pixels are popping up in the far right inuit village igloo. I've tried identifying the errant pixels, but haven't found them, so I'm not sure why pack animals are getting slotted there. You can see it the screenshot below:


And see it better in the event image below, where I reuse the igloo:


Or they could be in the background image, but I haven't found anything pure white there either.