Error displaying colors with alpha variable mode on figma file library related

I have a library with colors palette variables with alpha attached from another color, E.g. Color A: #000000, Color B: (A attached /50% alpha) also mode 1 and mode 2

I applied Color B to a components on another file with library added:

-Component 1, with color B, mode 1

-Component 1, with color B, mode 2

The problem was on 2nd component that display 100% alpha instead 50% setted in variables.

I fix it just changing to other color and then apply color B again. The color display as a setted in library