"Mission" option repeated hundreds of times in the settings parameter to DF

For some reason the settings parameter in the DEV server kept restarting a new mission every second with the "mission" parameter repeated hundreds (!!!) of times every second:

["mission", "DFL_Greenmountain_v68708453.chernarus"], ["mission", "DFL_Greenmountain_v68708453.chernarus"], ["mission", "DFL_Greenmountain_v68708453.chernarus"], ["mission", "DFL_Greenmountain_v68708453.chernarus"], ["mission", "DFL_Greenmountain_v68708453.chernarus"], ["mission", "DFL_Greenmountain_v68708453.chernarus"], ["mission", "DFL_Greenmountain_v68708453.chernarus"], ["mission", "DFL_Greenmountain_v68708453.chernarus"], ["mission", "DFL_Greenmountain_v68708453.chernarus"], ["mission", "DFL_Greenmountain_v68708453.chernarus"], (...)

This contributed to a a big increase in space taken by the replays.