Bug 298770 [GTK2.18] Clicking in hover help eats left clicks for entire X session
Eclipse SDK 3.5.1 with Mylyn 3.2.2 Linux/Gtk x86_64 (Fedora 12 with gtk2-2.18.5-4.fc12.x86_64) The following happens both with and without GDK_NATIVE_WINDOWS=true. I can't make it happen in a VNC session with gtk 2.18 nor can I make it happen in a VNC session with gtk 2.16. For gtk 2.16, it appears that this clicking behaviour results in a click-drag or click-copy operation (I'm sure I'm using incorrect terminology there ;). - extend your Eclipse window vertically to the bottom of your display area - have a task list with a bunch of tasks - put your mouse cursor over the last item in the list - notice that the hoverhelp information appears over where your cursor is located - left click in the hover area This results in the inability to left click anywhere else in desktop. I have to restart X to get left clicking back.
bundles/org.eclipse.jface/src/org/eclipse/jface/window/ToolTip.java
* 
	 * @param hideOnMouseDown
	 *            flag to indicate of tooltip is hidden automatically on mouse
	 *            down inside the tool tip
	 */
	public void setHideOnMouseDown(final boolean hideOnMouseDown) {
		
		if (CURRENT_TOOLTIP != null && !CURRENT_TOOLTIP.isDisposed()) {
			
			if (hideOnMouseDown != this.hideOnMouseDown) {
				control.getDisplay().syncExec(new Runnable() {
					public void run() {
						if (CURRENT_TOOLTIP != null
								&& CURRENT_TOOLTIP.isDisposed()) {
							toolTipHookByTypeRecursively(CURRENT_TOOLTIP,
									hideOnMouseDown, SWT.MouseDown);
						}
					}
				});
			}
		}
		this.hideOnMouseDown = hideOnMouseDown;
	}
	/**
	 * Hide the currently active tool tip
	 */
	public void hide() {
		toolTipHide(CURRENT_TOOLTIP, null);
	}
	private class ToolTipOwnerControlListener implements Listener {