I have not come across this issue in figs before, but in other fruit when the ends rot like that, it is blossom end rot. It is caused by a lack of calcium, which is an essential building block of fruit for plants. Without enough calcium, the plant can't build the cell walls of the fruit and it collapses and rots. It is normally caused by the plant getting too little water (which means it can't transport the calcium from the ground to the plant).
This articles describes it in tomatoes:
https://www.gardeningknowhow.com/edible/vegetables/tomato/tomato-blossom-rot.htm
It may be that when the early fruit were forming, there was either not enough calcium or water and blossom end rot was the result. The issue has been corrected, so the current fruit are developing fine.
