Bug 75945 [Markers] Bookmark, problem and tasks view don't restore column widths
org.eclipse.ui.views.markers.internal.TableView#saveState() only saves visible column widths but restoreColumnWidths() expects the memento to have widths for all columns. A simple one-line patch is attached.
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/views/markers/internal/TableView.java
.getSelection();
                viewerSelectionChanged(selection);
            }
        });
        setSorter(getSorter());
         
        
        createActions();
        viewer.setInput(getViewerInput());
        viewer.setSelection(restoreSelection(memento));
        Scrollable scrollable = (Scrollable) viewer.getControl();
        ScrollBar bar = scrollable.getVerticalBar();
        if (bar != null) {
            bar.setSelection(restoreVerticalScrollBarPosition(memento));
        }
        bar = scrollable.getHorizontalBar();
        if (bar != null) {
            bar.setSelection(restoreHorizontalScrollBarPosition(memento));
        }
        MenuManager mgr = initContextMenu();
        Menu menu = mgr.createContextMenu(viewer.getControl());
        viewer.getControl().setMenu(menu);
        getSite().registerContextMenu(mgr, getSelectionProvider());
        getSite().setSelectionProvider(getSelectionProvider());
        initActionBars(getViewSite().getActionBars());
        registerGlobalActions(getViewSite().getActionBars());
        viewer.addOpenListener(new IOpenListener() {
            public void open(OpenEvent event) {
                handleOpenEvent(event);
            }