Cold thermal Stone visual bug. White when fully frozen and yellow when half frozen.

Here they are turning yellow instead of light blue while in the half frozen state. I set them on the ground away from any heat/cold source for 1-2min to cause them to turn from white to yellow, then placed them back near the endothermic fire to see if it would fix the visual bug.

And here they are being placed back into the fridge yellow, and turning white again. Take notice that none of them lost any durability, so you know that i didn't warm them up at any point.

Edited July 19, 2020 by LonelySkeleton

Update: The bug went away in spring but happened again in summer.