I read the documentation on the Tooltip component and learned that there was trouble getting tooltips on disabled elements because they don't generate the necessary events to hook into.
Have an idea, don't know if it was already tried or thought of. Supply a true/false property that turns disabled tooltips on or off. When turned on, a transparent element is overlayed on top of the element the tooltip is attached to. the transparent element would be used for mouseovers and other events needed to know when to show/hide the tooltip.