Description: I played the Umayyads in Era III, which as a scientific nation have the ability to research Era IV Technologies in the previous Era. As I tried to got the scientific Era Star , I did research Early Gunpowder Warfare and unlocked the Arquebusier.  On advancing to Era IV I chose the Ottomans, for which Early Gunpowder Warfare unlocks the emblematic Unit (Janissary), but my game still shows the Arquebusier and I can't build the Janissary.

Steps to reproduce:  1. Play as Umayyads in Era III and research Early gunpowder warfare

                                  2. Advance to Era IV choosing the Ottamans

Ottomans Turn 152.ctr