Descriptive Problem Summary:
If you hold shift and then scroll the middle mouse button over the map while it is in focus in an interface where the map is positioned inside a child, such as the default skin, the map will scroll and move. A scroll bar appears at the horizontal axis of the map too.

Numbered Steps to Reproduce Problem:
1. Enter an environment with no skin which contains a viewable map.
2. Click the map to bring it into focus.
3. Hold down shift and scroll the middle mouse scroller.

Expected Results:
For the map to stay in place.

Actual Results:
The map moves.

Does the problem occur:
Every time? Or how often? Everytime.
In other games? Yes.
On other computers? Yes.
In other user accounts? Yes.

When does the problem NOT occur?
When the map is not positioned inside a child.

Workarounds:
Don't position the map inside a child.