The Map Issues Team (MI), is a Builder subteam that goes through maps either on their own or looking for community submitted bugs to remove map related bugs. These bugs can be something like holes or an unbalanced map that got past the Map Testing Team.
Unlike the Map Testing Team, the Map Issues Team looks at issues regarding live maps that are being reported by players and look to make fixes to existing maps. The Map Issues Team also looks to add minute details to maps that make them slightly more fit for purpose, although most of the time you do not realize this. Other times the changes are quite significant.
This team is run by joshuart_.