Bug 135559 [Markers] Problem view sections collapse after manual build
3.2 M6 The sections in the problem view collapse after a manual build For example: - set autobuild off - expand the errors section in the problem view - click on a problem - fix the problem - build - notice that the "error" section is now collapsed.
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/views/markers/internal/MarkerView.java
IMemento child = memento.createChild(TAG_FILTER_ENTRY, filters[i]
					.getName());
			filters[i].saveFilterSettings(child);
		}
	}
	/**
	 * Get the name of the filters preference for instances of the receiver.
	 * 
	 * @return String
	 */
	abstract String getFiltersPreferenceName();
	/**
	 * Restore the filters from the mimento.
	 * 
	 * @param memento
	 */
	void restoreFilters(IMemento memento) {
		IMemento[] sections = null;
		if (memento != null) {
			sections = memento.getChildren(TAG_FILTER_ENTRY);
		}
		if (sections == null) {
			
			IDialogSettings mainSettings = getDialogSettings();
			IDialogSettings filtersSection = mainSettings
					.getSection(OLD_FILTER_SECTION);
			if (filtersSection != null) {
				MarkerFilter markerFilter = createFilter(MarkerMessages.MarkerFilter_defaultFilterName);
				markerFilter.restoreFilterSettings(filtersSection);
				setFilters(new MarkerFilter[] { markerFilter });