I have a steam system boiler with an automatic water feed, I have flushed the boiler and let it fill up with water on its own after that the low water cutoff would ask for water every time I cut the boiler off and bac on causing too much water to be in the boiler when I allow the heat to remain on for a long period sieam and water would come out from the pressure release pipe. Can you tell me why tjis is occurring.

Dirty or faulty hydrosensor, most likely.