The yeast attenuation numbers for the different strains are totally different since you reformatted things (for example, look at W34/70 which used to be about 78.5 or 80%, and now it's 72%) but that doesn't seem to matter because the attenuation numbers are getting ignored. Pick a yeast that has 70% or one that has 86% and you get the same alcohol prediction, then put in a custom attenuation and nothing happens.
The yeast and grain selects are a lot harder to use now; what happened to the yeast manufacturer box so I could get a subsetted list to pick from? What prompted all these changes? They seem to be change just for change's sake, which is never a good idea with a user interface.
Edit: It seems the attenuation is ignored unless you put something in the quantity box (that should default to one rather than blank) and in the temperature box. (IMHO, temperature should not be a requirement, but you know more about that than I do) And the custom attenuation is ignored unless the quantity and temperature are filled in first. HTH