Hi brr,
This is not a bug this is indented functionality, make sure your diffuse has a Color Correct node as it explains in the instructions (step 5). You can use the Diffuse - Color Correct button before you do the translucency step.
Maybe in future I should add a failsafe so that it auto adds this for you (guessing thats the intention most of the time) and picks the appropriate function based on if you have a translucency texture or not.