The tooltip is positioned at bottom center with position-try-fallbacks: flip-block. Scroll down until the anchor nears the bottom edge — the tooltip flips above automatically.
📱 On mobile: switch to landscape mode. Portrait viewport height may not give enough room for the tooltip to detect overflow and trigger the flip.
Resize the viewport short or scroll the anchor near the bottom edge.
The browser flips the tooltip above flip-block : only when the default position overflows.