Is there a "retrain bug" for land units too? I am currently unable to retrain/rebuild damaged untis in two of my cities. It is not that there is damaged infrastructure to prevent this, or a lack of appropriate facilities, or a lack of funds. The cities are not under seige. One of said cities lost a great deal of soldiers to a plague, I thought maybe they could not retrain during a plague but that is not the case with the second city. All units in question were built in said cities too.
Any ideas?