new → pending
The tooltip doesn't care about clicks at all. It is shown on *focus*, as documented in the ARIA Authoring Practices.
Given that information, the change as requested doesn't make any sense, since there's no change to make. Presumably, what you want is that tooltips *close* on click, since they're already open due to the link receiving focus. However, this can't even be applied generically. For example, would you want an input's tooltip to close because you clicked into it to give it focus?
Anyway, the case you've described originally wouldn't change here. This is what would happen:
1. You mouse down on the anchor, giving it focus, and the tooltip opens.
2. You release the mouse button, resulting in a click. The tooltip would close due to a click.
3. The browser would follow the link, causing the current document, and therefore the anchor, to lose focus.
4. You return to the original page, the document and anchor regain focus. The tooltip opens.
See how you'd get the exact same behavior as today? Closing on click does nothing because it happens at exactly the same time as the anchor losing focus anyway, due to the window being backgrounded. Upon returning to the page, the anchor is still going to have focus and therefore will receive a
focus event again, resulting in the tooltip being shown again.