Hi @JoeyRoo
It seems that the rule is working correctly. Since your default color is set to Black, when you select size M, and the color Black is still available, the letter M is not crossed out. As for the color, the original rule is not to cross out the color, so that’s why you don’t see the color crossed out when you select the size.
When you select both the Nutshell color and size M, you’ll see ‘Sold out’ and a strikethrough on size M. Therefore, everything is still working correctly, so please rest assured.
You do not need to worry about it.
Hope it helps!
Best,
Daisy