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
* The adapter used to extract the String contents from an arbitrary
	 * control.
	 */
	private IControlContentAdapter controlContentAdapter;
	/*
	 * The popup used to show proposals.
	 */
	private ContentProposalPopup popup;
	/*
	 * The keystroke that signifies content proposals should be shown.
	 */
	private KeyStroke triggerKeyStroke;
	/*
	 * The String containing characters that auto-activate the popup.
	 */
	private String autoActivateString;
	/*
	 * Integer that indicates how an accepted proposal should affect the
	 * control. One of PROPOSAL_IGNORE, PROPOSAL_INSERT, or PROPOSAL_REPLACE.
	 * Default value is PROPOSAL_INSERT.
	 */
	private int proposalAcceptanceStyle = PROPOSAL_INSERT;
	/*
	 * A boolean that indicates whether key events received while the proposal
	 * popup is open should also be propagated to the control. Default value is
	 * true.
	 */
	private boolean propagateKeys = true;
	/*
	 * Integer that indicates the filtering style. One of FILTER_CHARACTER,