Weird building location reveal on the minimap

[Acorn511]

I keep getting a weird thing on my minimap. Basically, black mask is disabled for my map and fog of war is enabled. However, as soon as someone builds a townhall, the location is revealed to all players on the mini map with fog of war still intact.

This has been a huge problem for my map, as people will know where everyone's bases are right away by scanning over the minimap and seeing a colored dot, even though the entire map is fogged out.

 

[Adiktuz]

can you post the map?

 

[Acorn511]

can you post the map?

The link to the map is below in my siggie. Basically this will only show in a multiplayer game. As soon as the pack horse uses "Unpack" to transform into a settlement, the settlement becomes semi-visible on the minimap despite the fog of war.

For example, if blue uses unpack, all players will see a blue dot on the minimap. The area itself isn't revealed, but a blue dot will appear for all players with a faint outline of the settlement.

The unpack ability is simply based off bear form so I don't really understand why the unit is revealed.