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
toolTipOpen(shell, event);
			return shell;
		}
		return null;
	}
	private void toolTipShow(Shell tip, Event event) {
		if (!tip.isDisposed()) {
			currentArea = getToolTipArea(event);
			createToolTipContentArea(event, tip);
			if (isHideOnMouseDown()) {
				toolTipHookBothRecursively(tip);
			} else {
				toolTipHookByTypeRecursively(tip, true, SWT.MouseExit);
			}
			tip.pack();
			Point size = tip.getSize();
			Point location = fixupDisplayBounds(size, getLocation(size, event));
			
			
			Point cursorLocation = tip.getDisplay().getCursorLocation();
			if (cursorLocation.y == location.y && location.x < cursorLocation.x
					&& location.x + size.x > cursorLocation.x) {
				location.y -= 2;
			}
			tip.setLocation(location);
			tip.setVisible(true);
		}
	}
	private Point fixupDisplayBounds(Point tipSize, Point location) {
		if (respectDisplayBounds || respectMonitorBounds) {