As Grigori, I could only build three of each of the 4/civ national units. I think this may have been in a game prior to installing the latest patch, though. Has there been a change to that effect?
Unrelated, and not sure if it counts as a bug (but rather annoying)... my ranger captured a wolf. I selected both and told them to fortify until healed, figuring the ranger's 7 strength would keep the wolf from getting killed. So then one of the AIs (with which I'm at peace) kills the wolf, moving into the ranger's square. So much for using a stronger unit to defend it...
Unrelated, and not sure if it counts as a bug (but rather annoying)... my ranger captured a wolf. I selected both and told them to fortify until healed, figuring the ranger's 7 strength would keep the wolf from getting killed. So then one of the AIs (with which I'm at peace) kills the wolf, moving into the ranger's square. So much for using a stronger unit to defend it...