Argh miniMap issues
 

Every time I think I have the maps options sussed, it turns out I am wrong.

Is there a decent writeup on what al the various options for the minimap do an how they interact? I am so tired of having black boxes appear in the minimap at weird times that I am close to separating the Carbonite map from the game minimap. I really don't want to have two maps on the screen though.

I have same issue and would also love to have a solution. The black box realy annoys me. It can appear at the most inappropriate times, esp in battlegrounds.

I seem to have the most trouble with it in caves and instances where it seems to be completely random when it will and wont' show properly. I feel like I am missing something, but what?

The black circle of death is caused by transparency, if you turn set the transparency to 1 on the minimap slider it will go away.

There are some options that try to guess when the bug occurs and auto transparency to 1, but it's not perfect and sadly there is no way of knowing 100% when it will happen.