I've been trying to make a Sorcerer using the Divine Soul origin and the Giant Soul origin (which is still in UA playtest). I'm seeing the same issue with both of these origins. Both of these are supposed to add one or more Known Spells to your list, which do not count against your regular Known Spells amount. Once I select the appropriate Sorcerous Origin, you then have another choice to make (the various Giant types or Divine Affinity types), and this choice is what determines the spells that should be added to your Spells Known list. However, when I then go into the Spells section, I don't see those spells in my Known List. In the case of Divine Soul, it is worth noting that the Cleric Spells are appearing in my list of available spells to choose from, but the extra spells known aren't appearing in my Spells Known section. 

They will not show in the builder.

They will show on your character sheet.