Bug 222397 [Markers] Problems view no longer shows selected description in status bar
In 3.3.2, selecting a problem in the Problems view shows its description in the status bar. This is very handy if a description is overly verbose and just doesn't fit into the current width of that column. In 3.4 M5, it does not do this any more.
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/internal/views/markers/MarkerMap.java
/**
	 * Return the entry at index
	 * 
	 * @param index
	 * @return MarkerEntry
	 */
	public MarkerEntry elementAt(int index) {
		return markers[index];
	}
	/**
	 * Return the {@link MarkerItem} that maps to marker.
	 * 
	 * @param marker
	 * @return {@link MarkerItem}
	 */
	public MarkerItem getMarkerItem(IMarker marker) {
		if (markerToEntryMap == null) {
			markerToEntryMap = new HashMap();
			for (int i = 0; i < markers.length; i++) {
				IMarker nextMarker = markers[i].getMarker();
				if (nextMarker != null)
					markerToEntryMap.put(nextMarker, markers[i]);
			}
		}
		if (markerToEntryMap.containsKey(marker))
			return (MarkerItem) markerToEntryMap.get(marker);
		return null;
	}
}