[Grimsin]

One of the reasons that many minimap addons do not mess with the worldmap button or it has problems is because there is a secure handler "bug" on the blizz side. Or maybe its not a bug and rather just bad coding either way... when an addon mess's with that worldmap button it causes secure taint issues with the "WorldMapBlobFrame" and can cause the worldmap to screw up all together. various authors went about fixing it in various ways some just removed it. As that would be easiest considering most people press M for the map rather then click a button.