Bug 143474 [FieldAssist] Info popup in ContentProposalAdapter shows obsolete information
This problem occurs when the info popup dialog is already up. When I scroll through a list of content proposals in the content proposal popup dialog, if the current selection has extra information to show, the associated info popup dialog comes up. Then if I scroll to another selection which does not have any extra information to show, the info popup dialog does not go away. Instead, it keeps showing the context information from my last selection. Shouldn't the info popup be closed if the new selection has no additional information to show? Thanks.
bundles/org.eclipse.jface/src/org/eclipse/jface/fieldassist/ContentProposalAdapter.java
* proposal provider. If there are no proposals to be shown, do not show
	 * the popup.  This method returns immediately. That is, it does not
	 * wait for the popup to open or a proposal to be selected.
	 * 
	 * @param autoActivated a boolean indicating whether the popup was
	 * autoactivated.  If false, a beep will sound when no proposals
	 * can be shown.
	 */
	private void openProposalPopup(boolean autoActivated) {
		if (isValid()) {
			if (popup == null) {
				
				recordCursorPosition();  
				IContentProposal[] proposals = getProposals();
				if (proposals.length > 0) {
					if (DEBUG) {
						System.out.println("POPUP OPENED BY PRECEDING EVENT"); 
					}
					recordCursorPosition();
					popup = new ContentProposalPopup(null, proposals);
					popup.open();
					popup.getShell().addDisposeListener(new DisposeListener() {
						public void widgetDisposed(DisposeEvent event) {
							popup = null;
						}
					});
				} else if (!autoActivated) {
					getControl().getDisplay().beep();
				}
			}