Bug: Variable products custom atributes

Hey

I’m currently developing a website with woocommerce and I found a bug, but I don’t know if it’s caused by the theme or is just common bug.

If I add a custom atribute to a variable product and I set the values with spaces like, ‘Large blue’ or some value with an uppercase character(Large Blue) when woocommerce prints the selector they just disappear, but if I add them to an attribute created previously with values set to it I can see them.

By the way woocommerce version is 2.5.5, so I don’t knwo if in the major update(2.6+) is fixed or what.

Someone with the same issue or just me?