In april 2021 update Zulu has Ikanda buffed:
Some screenshots (note textbox with city's science yields):
Here is broken Ikanda in a captured non-native city:
Here is broken ikanda in recaptured Zulu capital:
Here is functioning Ikanda in Zulu native city:
However buildings in Ikanda won't yield science and gold if:Ikanda: Modified. Now grants +1 Science and +2 Gold from each building.
- Ikanda is built in a city that is not native to Zulu (i.e. captured by Zulu)
- Zulu native city was occupied by opponent, but then recaptured by Zulu again
Some screenshots (note textbox with city's science yields):
Here is broken Ikanda in a captured non-native city:
Here is broken ikanda in recaptured Zulu capital:
Here is functioning Ikanda in Zulu native city: