When you fully research an Ellydium ship, you should get 0/0 Synergy and no nodes displayed to upgrade.
This is working correct for Thar’Ga, but not for Tai’Kin. Tai’Kin is missing an interface with such information.
Thar’Ga - added interface display (working as intended)
Tai’Kin - missing interface display in the middle (it needs to be added to match Thar’Ga example)