QGIS » QGIS Application

I'm flagging this as a blocker as it's a fundamental issue to this (cool!) new feature. Basically, the coordinate position controls (inside / outside frame, vertical / horizontal) are always applied to the first grid when changed, even though your editing a second grid.

1. Open an existing project
2. Create a new composer, and add a map item onto it
3. In the grid settings add two grids ('Grid 1' and 'Grid 2')
4. Select 'Grid 1', and set it so a few vertical and horizontal lines appear, [x] check draw coordinates, and change the font color to red
5. Select 'Grid 2', and also set it so a few vertical and horizontal lines appear (preferably not using the exact same settings as 'Grid 1'), [x] check draw coordinates, and change the font color to green
6. While your still in the 'Grid 2' settings, start to change the coordinate position settings, for e.g. make left coordinate draw inside the frame. You'll notice that while the green coordinates of 'Grid 2' should move inside frame, it's actually the red coordinates of 'Grid 1' that does so

This issue makes it impossible to tweak the coordinate positions of any grid beyond the first grid.