Bug 53010 Editor preferences do not take effect on open editors
I-20040224 Go to the Java > Editor > Syntax preference page. Change the keyword color to red. Press Ok. At this point, we use to see the preview update. Not on this build (problem #1). Press Ok, and close the pref dialog. The java editor that was already open did not update. I had to close it and reopen it for the colors to take effect (problem #2)
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/javaeditor/JavaEditor.java
super.setNewPreferenceStore(store);
		if (getSourceViewerConfiguration() instanceof JavaSourceViewerConfiguration)
			((JavaSourceViewerConfiguration)getSourceViewerConfiguration()).setNewPreferenceStore(store);
	}
	
	/*
	 * @see IWorkbenchPart#dispose()
	 */
	public void dispose() {
		
		fMarkOccurrenceAnnotations= false;
		uninstallOccurrencesFinder();
		
		if (fActivationListener != null) {
			Shell shell= getEditorSite().getShell();
			if (shell != null && !shell.isDisposed())
				shell.removeShellListener(fActivationListener);
			fActivationListener= null;
		}
		
		if (isBrowserLikeLinks())
			disableBrowserLikeLinks();
			
		if (fEncodingSupport != null) {
			fEncodingSupport.dispose();
			fEncodingSupport= null;
		}
		
		if (fBracketMatcher != null) {
			fBracketMatcher.dispose();