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
if (location.y < bounds.y) {
					location.y = bounds.y;
				}
			}
		}
		return location;
	}
	/**
	 * Get the display relative location where the tooltip is displayed.
	 * Subclasses may overwrite to implement custom positioning.
	 * 
	 * @param tipSize
	 *            the size of the tooltip to be shown
	 * @param event
	 *            the event triggered showing the tooltip
	 * @return the absolute position on the display
	 */
	public Point getLocation(Point tipSize, Event event) {
		return control.toDisplay(event.x + xShift, event.y + yShift);
	}
	private void toolTipHide(Shell tip, Event event) {
		if (tip != null && !tip.isDisposed() && shouldHideToolTip(event)) {
			control.getShell().removeListener(SWT.Deactivate, shellListener);
			currentArea = null;
			passOnEvent(tip, event);
			tip.dispose();
			CURRENT_TOOLTIP = null;
			afterHideToolTip(event);
		}
	}