All of the meters are replaced by atlas texture segments when the minimap is shown.

Using RenderGameOverlayEvent.Post instead of RenderGameOverlayEvent solves the health and xp, but not the hunger. (this is also supposed to improve performance, as RenderGameOverlayEvent is called for each type of render)

As of commit 89d25ec6b4d109fa7619c51c5db2c3ac24a0373a, this has been solved (by checking for the event.type in the render event receiver).