demo · v133

Stack explorer

Hints live in a separate top-layer lane to auto popovers. Open and close menus and tooltips in any order, then read the live top-layer stack — auto and hint slots tracked independently.

Hint popover 1 — lives in the hint lane.
Hint popover 2.
auto lane (latest on top)
hint lane

two lanes, one top layer

Auto popovers form a stack: opening a new one closes any other auto popover that is not its ancestor. Hint popovers form a separate stack with the same rule applied only among hints — so a menu (auto) can stay open while you mouse over a help icon (hint) and the menu doesn't dismiss. This is the long-standing tooltip-vs-menu conflict, solved at the spec level.

see also