Bug 18637 Templates preferences: table layout problem
In Preferences>Java>Templates the table comes up with an incorrect initial layout (columns are not wide enough around 100 pixels). workaround adjust manually fix candidate for F3
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/preferences/TemplatePreferencePage.java
Iterator iterator= registry.iterator();
			contextTypeName= (String) iterator.next();
		}
		template.setContext(contextTypeName); 
		
		EditTemplateDialog dialog= new EditTemplateDialog(getShell(), template, false);
		if (dialog.open() == dialog.OK) {
			fTemplates.add(template);
			fTableViewer.refresh();
			fTableViewer.setChecked(template, template.isEnabled());
			fTableViewer.setSelection(new StructuredSelection(template));			
		}
	}
	private void edit() {
		IStructuredSelection selection= (IStructuredSelection) fTableViewer.getSelection();
		Object[] objects= selection.toArray();		
		if ((objects == null) || (objects.length != 1))
			return;
		
		Template template= (Template) selection.getFirstElement();
		edit(template);
	}
	private void edit(Template template) {
		Template newTemplate= new Template(template);
		EditTemplateDialog dialog= new EditTemplateDialog(getShell(), newTemplate, true);
		if (dialog.open() == dialog.OK) {
			if (!newTemplate.getName().equals(template.getName()) &&
				MessageDialog.openQuestion(getShell(),
				TemplateMessages.getString("TemplatePreferencePage.question.create.new.title"), 
				TemplateMessages.getString("TemplatePreferencePage.question.create.new.message")))