NEW BUG:

Make a transaction item option called "colors"
Set color choice list = red, green, blue, black, white, yellow

Make two different matrix items that use these "color" options.

Matrix Item 1 uses colors = red, green, blue

Matrix Item 2 uses colors = black, white, yellow

Now, I set the "transaction item option" to default to RED.

I go to our web-store and BOTH items show red as the default, but if you hit add to cart on the 2nd item ...it says "that option not available".  It used to only default the items that actually HAD that item option available in it's matrix and any others would default to "null".  So, in the above example ...item one would default to RED and and item two would default to null!  Now it just shows our customers options that they can't purchase!