I came across this same issue, the only way to (currently) fix this is to disable cage cursor, save the changes, then re-enable cage cursor and again, save the changes and it should be back to normal. The issue seems to re-occur if you alt-tab. Not had it re-occur any other way yet. It bothered me for a bit having to keep disabling/re-enabling but then found holding down my mouse wheel and moving the map is far quicker