Problems with tooltips

[Mark]

Steps to reproduce: Have a named object with Tooltip turned on, with a button attached that has its own tooltip. Move your cursor on to the button to show its tooltip, then move your cursor back on to the object the button is on.
Expected outcome: It shows the object tooltip.
Bug: It doesn't show the object tooltip unless you take the mouse off the object and hover it over the object again.

Steps to reproduce: Have a button that switches its tooltip when you click on it. Hover your cursor over the button to show its existing tooltip and click the button.
Expected outcome: The old tooltip disappears and the new tooltip appears.
Bug: The old tooltip disappears and the new one doesn't show unless you re-apply the cursor on to the button.